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Sea temperature in United States

Live water temperatures and swimming conditions across 692 beaches on the United States coast.

Best time to swim in United States

The sea in United States peaks in July, when the water averages around 28°C.

The main swimming season runs from April – November, when surface temperatures stay comfortable for extended sessions.

On average, 8 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.

Shoulder months like March and December are noticeably cooler but often quieter, with fewer crowds and steadier weather.

The coldest month is typically January at around 18°C, when cold-water swimmers dominate the coast.

United States sea temperature history

Long-term climatology for United States shows an annual mean sea temperature of 23°C, ranging from 18°C in winter to 28°C at the summer peak.

The seasonal swing is roughly 10°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.

Recent decades have trended slightly warmer at United States, in line with regional sea-surface temperature records for the wider basin.

Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.

Jan
18°C
Feb
18°C
Mar
19°C
Apr
21°C
May
23°C
Jun
26°C
Jul
28°C
Aug
28°C
Sep
27°C
Oct
25°C
Nov
22°C
Dec
19°C

Values are area averages; individual beaches vary by exposure and depth.

United States sea temperature: frequently asked questions

What is the warmest month to swim in United States?

July is the warmest month in United States, when the sea averages about 28°C. Late-season warmth often persists a few weeks after peak.

When is the sea coldest in United States?

The coldest month in United States is typically January, when the water averages around 18°C. Cold-water swimmers and surfers dominate this period.

When can you swim in United States without a wetsuit?

The main swimming season in United States runs from April – November — about 8 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.

Do I need a wetsuit in United States?

Outside peak summer the water in United States drops toward 19°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.

What is the average sea temperature in United States?

The long-term annual mean sea temperature in United States is about 23°C, based on multi-decadal climatology of the surrounding waters.

How do I check the current sea temperature in United States?

The live reading at the top of this page shows the current sea temperature in United States, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.

United States sea temperature by month

Average sea temperatures around United States for every month of the year, based on long-term Open-Meteo marine climatology.

Monthly average sea temperature in United States
MonthAverage sea
January18.0°C
February18.0°C
March19.0°C
April21.0°C
May23.0°C
June26.0°C
July ⭐28.0°C
August28.0°C
September27.0°C
October25.0°C
November22.0°C
December19.0°C

Monthly figures are modelled climatology averages, not live readings. How accurate is our data?

Browse by state

Deep-dive hubs for the US coastal states with the most tracked beaches.

California
1,100 miles of Pacific coast, from cool NorCal breaks to warm SoCal bays.
Florida
Warm-water swimming almost year-round on two coastlines and the Keys.
Hawaii
Tropical Pacific water year-round across Oahu, Maui, Kauai and the Big Island.
New Jersey
The Jersey Shore — 130 miles of Atlantic beaches from Sandy Hook to Cape May.
North Carolina
The Outer Banks and Crystal Coast — warm Atlantic swimming from June to September.
Massachusetts
Cape Cod, the Islands and the North Shore — classic New England swimming.
South Carolina
The Grand Strand and Lowcountry — long warm swim seasons on the SC coast.
Texas
Gulf Coast beaches from South Padre to Galveston with a long warm season.
New York
Long Island's ocean shore and the Hamptons — cool but classic Atlantic swimming.
Puerto Rico
Warm Caribbean and Atlantic beaches, swimmable every month of the year.
Maine
Cold, clear Gulf of Maine water — short but memorable Atlantic swimming.
Oregon
Dramatic Pacific Northwest coastline — chilly water, spectacular beaches.
Michigan
Great Lakes beaches on Lake Michigan, Huron and Superior.
Georgia
Tybee, Jekyll and the Golden Isles — warm Lowcountry Atlantic beaches.
Washington
Pacific and Puget Sound beaches — cool water, wild scenery.

Warmest beaches in United States right now

BeachRegionSea
Playa Mar ChiquitaPuerto Rico28.7°C
Ocean Park BeachPuerto Rico28.6°C
Playa PelicanoPuerto Rico28.5°C
Cerro GordoPuerto Rico28.5°C
Lindquist BeachUS Virgin Islands28.4°C
Caracas BeachPuerto Rico28.3°C
Seven Seas BeachPuerto Rico28.3°C
Hawksnest BayUS Virgin Islands28.3°C
Buck IslandUS Virgin Islands28.3°C
Playa Carlos RosarioPuerto Rico28.2°C
Shacks BeachPuerto Rico28.2°C
Playa SantaPuerto Rico28.2°C
Playa AzulPuerto Rico28.2°C
Domes BeachPuerto Rico28.2°C
Playa NegraPuerto Rico28.1°C
Gilligan's IslandPuerto Rico28.1°C
Zoni BeachPuerto Rico28.0°C
Pinones BeachPuerto Rico28.0°C
Playa El ConventoPuerto Rico27.9°C
Steps BeachPuerto Rico27.9°C
Maho BayUS Virgin Islands27.9°C
Coki BeachUS Virgin Islands27.9°C
Sun BayPuerto Rico27.8°C
Caja de MuertosPuerto Rico27.8°C
Crane BeachMassachusetts27.7°C
Boqueron BeachPuerto Rico27.7°C
Isla Verde BeachPuerto Rico27.7°C
Buye BeachPuerto Rico27.6°C
Playa Punta SantiagoPuerto Rico27.6°C
Playa JobosPuerto Rico27.5°C
Playa EscondidaPuerto Rico27.5°C
Salt Pond BayUS Virgin Islands27.5°C
Sandy PointUS Virgin Islands27.5°C
Half Moon BayCentral California27.4°C
La ParedPuerto Rico27.4°C
Cinnamon BayUS Virgin Islands27.4°C
Cane BayUS Virgin Islands27.3°C
Sombrero BeachFlorida Keys26.7°C
Hanauma BayHawaii26.7°C
Makalawena BeachHawaii26.7°C
Lydgate BeachHawaii26.7°C
Kee BeachHawaii26.6°C
Wailea BeachHawaii26.6°C
Bahia HondaFlorida Keys26.5°C
Waimanalo BeachHawaii26.5°C
Papohaku BeachHawaii26.5°C
Polihale BeachHawaii26.4°C
Hulopoe BayHawaii26.4°C
Salt Pond BeachHawaii26.4°C
Kaanapali BeachHawaii26.3°C
Ehukai BeachHawaii26.3°C
Kapalua BayHawaii26.2°C
Polihua BeachHawaii26.2°C
Higgs BeachFlorida Keys26.1°C
Mauna Kea BeachHawaii26.1°C
Makaha BeachHawaii26.1°C
Fort Zachary TaylorFlorida Keys26.0°C
Ala Moana BeachHawaii26.0°C
Magic SandsHawaii26.0°C
Ko Olina LagoonsHawaii25.9°C
Sunset BeachHawaii25.8°C
PipelineHawaii25.8°C
Pupukea BeachHawaii25.8°C
Chun's Reef BeachHawaii25.8°C
Laniakea BeachHawaii25.8°C
Sandy BeachHawaii25.7°C
Hanalei BayHawaii25.7°C
Hookipa BeachHawaii25.7°C
Makapuu BeachHawaii25.7°C
Cocoa BeachFlorida Atlantic25.6°C
Smathers BeachFlorida Keys25.6°C
Poipu BeachHawaii25.6°C
Halawa BeachHawaii25.6°C
Lummus Park BeachFlorida Atlantic25.6°C
Waikiki BeachHawaii25.5°C
Punaluu Black SandHawaii25.5°C
Lanikai BeachHawaii25.5°C
Fernandina BeachFlorida Atlantic25.5°C
Juno BeachFlorida Atlantic25.4°C
Hapuna BeachHawaii25.4°C
Tunnels BeachHawaii25.4°C
Apollo BeachFlorida Atlantic25.4°C
Turtle BayHawaii25.4°C
Daytona Beach ShoresFlorida Atlantic25.4°C
Vilano BeachFlorida Atlantic25.4°C
North BeachFlorida Atlantic25.3°C
Waimea BayHawaii25.3°C
Kua BayHawaii25.3°C
Kailua BeachHawaii25.3°C
Bellows BeachHawaii25.3°C
Mokuleia BeachHawaii25.3°C
Dania BeachFlorida Atlantic25.3°C
Palm Beach Public BeachFlorida Atlantic25.3°C
Fort Pierce Inlet BeachFlorida Atlantic25.3°C
Ponte Vedra BeachFlorida Atlantic25.3°C
Little Talbot BeachFlorida Atlantic25.3°C
Lake Worth BeachFlorida Atlantic25.2°C
Jupiter BeachFlorida Atlantic25.2°C
Amelia IslandFlorida Atlantic25.2°C
Indialantic BeachFlorida Atlantic25.2°C
Ponce Inlet BeachFlorida Atlantic25.2°C
Haulover BeachFlorida Atlantic25.1°C
Hallandale BeachFlorida Atlantic25.1°C
Fort Lauderdale BeachFlorida Atlantic25.1°C
Hutchinson IslandFlorida Atlantic25.1°C
Anastasia State BeachFlorida Atlantic25.1°C
South BeachFlorida Atlantic25.0°C
Mid BeachFlorida Atlantic25.0°C
Boca Raton BeachFlorida Atlantic25.0°C
Jensen BeachFlorida Atlantic25.0°C
Cape Canaveral BeachFlorida Atlantic25.0°C
Daytona BeachFlorida Atlantic25.0°C
Ormond BeachFlorida Atlantic25.0°C
Flagler BeachFlorida Atlantic25.0°C
Jacksonville BeachFlorida Atlantic25.0°C
Lauderdale-by-the-Sea BeachFlorida Atlantic25.0°C
Stuart BeachFlorida Atlantic24.9°C
Atlantic Beach FLFlorida Atlantic24.9°C
Bathtub Reef BeachFlorida Atlantic24.9°C
Sunny Isles BeachFlorida Atlantic24.8°C
Vero BeachFlorida Atlantic24.8°C
Melbourne BeachFlorida Atlantic24.8°C
Pompano BeachFlorida Atlantic24.8°C
Midtown Beach Palm BeachFlorida Atlantic24.8°C
Blowing Rocks PreserveFlorida Atlantic24.8°C
St Augustine BeachFlorida Atlantic24.7°C
Amelia Island BeachFlorida Atlantic24.7°C
Crescent Beach FLFlorida Atlantic24.6°C
Hollywood BeachFlorida Atlantic24.5°C
Palm Beach MunicipalFlorida Atlantic24.5°C
Singer IslandFlorida Atlantic24.5°C
New Smyrna BeachFlorida Atlantic24.5°C
Playalinda BeachFlorida Atlantic24.5°C
Sebastian Street BeachFlorida Atlantic24.5°C
Deerfield BeachFlorida Atlantic24.4°C
Neptune BeachFlorida Atlantic24.4°C
Sebastian InletFlorida Atlantic24.4°C
North Shore Open SpaceFlorida Atlantic24.4°C
Boynton BeachFlorida Atlantic24.4°C
Bal Harbour BeachFlorida Atlantic24.3°C
Satellite BeachFlorida Atlantic24.3°C
Marco Island BeachFlorida Gulf23.7°C
Turner BeachFlorida Gulf23.6°C
Clearwater BeachFlorida Gulf23.5°C
Delnor-Wiggins Pass BeachFlorida Gulf23.5°C
Barefoot BeachFlorida Gulf23.5°C
Longboat Key BeachFlorida Gulf23.5°C
Sunset Beach FLFlorida Gulf23.5°C
Siesta KeyFlorida Gulf23.4°C
Manasota KeyFlorida Gulf23.4°C
Pensacola BeachFlorida Gulf23.4°C
Grayton BeachFlorida Gulf23.4°C
Seaside BeachFlorida Gulf23.4°C
Panama City BeachFlorida Gulf23.4°C
Venice Beach FLFlorida Gulf23.4°C
Honeymoon IslandFlorida Gulf23.3°C
Fort De SotoFlorida Gulf23.3°C
Destin BeachFlorida Gulf23.3°C
Holmes BeachFlorida Gulf23.3°C
Miramar BeachFlorida Gulf23.2°C
Rosemary BeachFlorida Gulf23.2°C
Bean PointFlorida Gulf23.2°C
Lowdermilk BeachFlorida Gulf23.2°C
Bowman's BeachFlorida Gulf23.2°C
Pass-a-GrilleFlorida Gulf23.1°C
Turtle BeachFlorida Gulf23.1°C
Englewood BeachFlorida Gulf23.1°C
Navarre BeachFlorida Gulf23.1°C
Indian Shores BeachFlorida Gulf23.1°C
Sand KeyFlorida Gulf23.0°C
Madeira BeachFlorida Gulf23.0°C
Treasure IslandFlorida Gulf23.0°C
Captiva BeachFlorida Gulf23.0°C
Bonita BeachFlorida Gulf23.0°C
Bradenton BeachFlorida Gulf22.9°C
Bowman's BeachFlorida Gulf22.9°C
Tigertail BeachFlorida Gulf22.9°C
Coquina BeachFlorida Gulf22.8°C
Lido KeyFlorida Gulf22.8°C
Vanderbilt BeachFlorida Gulf22.8°C
South Marco BeachFlorida Gulf22.8°C
Redington BeachFlorida Gulf22.8°C
Belleair BeachFlorida Gulf22.8°C
Caladesi IslandFlorida Gulf22.7°C
Muir BeachCalifornia22.7°C
Seabright BeachCalifornia22.7°C
Seacliff State BeachCalifornia22.7°C
Fred Howard Park BeachFlorida Gulf22.7°C
Grand Isle BeachLouisiana22.7°C
Boca GrandeFlorida Gulf22.6°C
Watch Hill BeachRhode Island22.6°C
Pere Marquette BeachMichigan22.6°C
Hampton BeachNew Hampshire22.6°C
Sanibel Island BeachFlorida Gulf22.6°C
San Simeon State BeachCalifornia22.6°C
Pescadero State BeachCalifornia22.6°C
Empire BeachMichigan22.6°C
Chic's BeachVirginia22.6°C
Rodeo BeachCalifornia22.6°C
Corcoran Lagoon BeachCalifornia22.6°C
Salinas River State BeachCalifornia22.6°C
Turtle Beach Siesta KeyFlorida Gulf22.6°C
Ben T. Davis BeachFlorida Gulf22.6°C
Sleeping Bear BeachMichigan22.6°C
St Pete BeachFlorida Gulf22.5°C
Naples Pier BeachFlorida Gulf22.5°C
Mexico BeachFlorida Gulf22.5°C
Gulf Shores BeachAlabama22.5°C
Pacific City BeachOregon22.5°C
Seaside Beach OregonOregon22.5°C
Manzanita BeachOregon22.5°C
Bandon BeachOregon22.5°C
North Avenue BeachIllinois22.5°C
Kennebunk BeachMaine22.5°C
Pemaquid BeachMaine22.5°C
Morro StrandCalifornia22.5°C
Bolinas BeachCalifornia22.5°C
Gulf State ParkAlabama22.5°C
Yachats State ParkOregon22.5°C
Bonny Doon BeachCalifornia22.5°C
Fort DeSoto BeachFlorida Gulf22.5°C
Rockaway Beach OROregon22.5°C
Yachats State Recreation AreaOregon22.5°C
Traverse City BeachMichigan22.5°C
Headlands Beach OHOhio22.5°C
Indian Rocks BeachFlorida Gulf22.4°C
Fort Myers BeachFlorida Gulf22.4°C
St George IslandFlorida Gulf22.4°C
Gulfport BeachMississippi22.4°C
Bowman's BeachFlorida22.4°C
Carpinteria BeachCalifornia22.4°C
Lincolnville BeachMaine22.4°C
Seabrook BeachNew Hampshire22.4°C
Cape San BlasFlorida Panhandle22.4°C
First LandingVirginia22.4°C
Limantour BeachCalifornia22.4°C
Bodega Bay BeachCalifornia22.4°C
San Gregorio State BeachCalifornia22.4°C
Nokomis BeachFlorida Gulf22.4°C
Anclote Key BeachFlorida Gulf22.4°C
St Andrews State ParkFlorida Gulf22.3°C
Hamoa BeachMaui22.3°C
Bethany BeachDelaware22.3°C
Virginia BeachVirginia22.3°C
Lido BeachFlorida22.3°C
Anna Maria BeachFlorida22.3°C
Delray BeachFlorida22.3°C
Wallis SandsNew Hampshire22.3°C
Tybee IslandGeorgia22.3°C
Jekyll IslandGeorgia22.3°C
St. Simons BeachGeorgia22.3°C
Marshall's BeachCalifornia22.3°C
Drakes BeachCalifornia22.3°C
Doran BeachCalifornia22.3°C
Waddell BeachCalifornia22.3°C
Caspersen BeachFlorida Gulf22.3°C
Naples BeachFlorida22.2°C
Sleeping Bear BeachMichigan22.2°C
Ecola BeachOregon22.2°C
Lincoln City BeachOregon22.2°C
Ocean Beach ParkConnecticut22.2°C
Little TybeeGeorgia22.2°C
Fort Morgan BeachAlabama22.2°C
Bay St. Louis BeachMississippi22.2°C
Pass Christian BeachMississippi22.2°C
Ocean City BeachMaryland22.2°C
Point Reyes Beach NorthCalifornia22.2°C
Big River BeachCalifornia22.2°C
Twin Lakes State BeachCalifornia22.2°C
Zmudowski State BeachCalifornia22.2°C
Marina State BeachCalifornia22.2°C
Perdido Key BeachFlorida Panhandle22.2°C
First Beach La PushWashington22.2°C
Sandbridge BeachVirginia22.1°C
Oval BeachMichigan22.1°C
Oak Street BeachIllinois22.1°C
Wells BeachMaine22.1°C
Higgins BeachMaine22.1°C
Popham BeachMaine22.1°C
North Hampton State BeachNew Hampshire22.1°C
Rocky Neck State ParkConnecticut22.1°C
Silver SandsConnecticut22.1°C
Gray Whale CoveCalifornia22.1°C
Manresa State BeachCalifornia22.1°C
Perdido KeyAlabama22.1°C
Alki BeachWashington22.1°C
Poplar BeachCalifornia22.1°C
Its BeachCalifornia22.1°C
Cape San Blas BeachFlorida Panhandle22.1°C
Ludington BeachMichigan22.1°C
Cedar Point BeachOhio22.1°C
Bradford BeachWisconsin22.0°C
Henderson BeachFlorida Panhandle22.0°C
Windansea BeachCalifornia22.0°C
Ship IslandMississippi22.0°C
Wilderness State ParkMichigan22.0°C
Goat Rock BeachCalifornia22.0°C
Cumberland Island BeachGeorgia22.0°C
Cannon BeachOregon21.9°C
Long Beach WAWashington21.9°C
Silver BeachMichigan21.9°C
Ogunquit BeachMaine21.9°C
Footbridge BeachMaine21.9°C
Sherwood IslandConnecticut21.9°C
Compo BeachConnecticut21.9°C
Driftwood BeachGeorgia21.9°C
Sea Island BeachGeorgia21.9°C
Warren DunesMichigan21.9°C
China BeachCalifornia21.9°C
Diamond Head BeachOahu21.9°C
Napili BayMaui21.9°C
Newport Beach OregonOregon21.8°C
Sandy Point BeachMaine21.8°C
Hammonasset BeachConnecticut21.8°C
Misquamicut State BeachRhode Island21.8°C
WaterColor BeachFlorida Panhandle21.8°C
Gold BeachOregon21.8°C
Half Moon Bay State BeachCalifornia21.8°C
Panther BeachCalifornia21.8°C
Cowell BeachCalifornia21.8°C
New Brighton State BeachCalifornia21.8°C
D.T. Fleming BeachMaui21.8°C
Big BeachMaui21.7°C
Sanibel BeachFlorida21.7°C
Misquamicut BeachRhode Island21.7°C
Presque Isle BeachPennsylvania21.7°C
Sanibel LighthouseFlorida21.7°C
Pine Point BeachMaine21.7°C
Echo Lake BeachMaine21.7°C
Jenness State BeachNew Hampshire21.7°C
Easton's BeachRhode Island21.7°C
Narragansett Town BeachRhode Island21.7°C
Shell IslandFlorida Panhandle21.7°C
Camp HelenFlorida Panhandle21.7°C
Ocean BeachCalifornia21.7°C
East BeachGeorgia21.7°C
Tawas PointMichigan21.7°C
Chincoteague BeachVirginia21.7°C
Cape Charles BeachVirginia21.7°C
Cape HenlopenDelaware21.7°C
Rio Del Mar State BeachCalifornia21.7°C
Moss Landing State BeachCalifornia21.7°C
Okaloosa Island BeachFlorida Panhandle21.7°C
Fort Morgan BeachAlabama21.7°C
Nye BeachOregon21.7°C
Petoskey State ParkMichigan21.7°C
Stewart BeachTexas21.6°C
Assateague BeachMaryland21.6°C
Grand Haven BeachMichigan21.6°C
Indiana Dunes BeachIndiana21.6°C
Lovers KeyFlorida21.6°C
Mothers BeachMaine21.6°C
Dauphin IslandAlabama21.6°C
Ocean ShoresWashington21.6°C
Kalaloch BeachWashington21.6°C
Manchester State BeachCalifornia21.6°C
Van Damme BeachCalifornia21.6°C
Natural Bridges State BeachCalifornia21.6°C
Sunny Cove BeachCalifornia21.6°C
Little Beach MauiMaui21.6°C
South Padre IslandTexas21.5°C
Rehoboth BeachDelaware21.5°C
Galveston East BeachTexas21.5°C
Rialto BeachWashington21.5°C
Old Orchard BeachMaine21.5°C
Goose Rocks BeachMaine21.5°C
Cumberland IslandGeorgia21.5°C
Agate BeachOregon21.5°C
Whitefish DunesWisconsin21.5°C
Dewey BeachDelaware21.5°C
Mavericks BeachCalifornia21.5°C
Bean Hollow State BeachCalifornia21.5°C
Del Monte BeachCalifornia21.5°C
Surfside Beach TXTexas21.5°C
North Padre IslandTexas21.4°C
Orange BeachAlabama21.4°C
Biloxi BeachMississippi21.4°C
Surfside Beach TXTexas21.4°C
Drakes Island BeachMaine21.4°C
Reid State ParkMaine21.4°C
Sand BeachMaine21.4°C
Calf Pasture BeachConnecticut21.4°C
Scarborough State BeachRhode Island21.4°C
Montara State BeachCalifornia21.4°C
Sunset State BeachCalifornia21.4°C
Salmon Creek BeachCalifornia21.4°C
Panama City BeachFlorida Panhandle21.4°C
Third Beach La PushWashington21.4°C
Corpus Christi BeachTexas21.3°C
Ruby BeachWashington21.3°C
Inlet BeachFlorida Panhandle21.3°C
Pacifica State BeachCalifornia21.3°C
Holland State ParkMichigan21.3°C
Fenwick IslandDelaware21.3°C
Pomponio State BeachCalifornia21.3°C
Padre Island National SeashoreTexas21.3°C
Sea Rim State ParkTexas21.2°C
Padre Balli ParkTexas21.1°C
Rockport BeachTexas20.9°C
Quintana BeachTexas20.9°C
Isla BlancaTexas20.8°C
Port Aransas BeachTexas20.7°C
Matagorda BeachTexas20.6°C
Crystal BeachTexas20.5°C
Matagorda BeachTexas20.5°C
Mustang IslandTexas20.4°C
Galveston BeachTexas20.4°C
Mustang Island BeachTexas20.4°C
Mustang Island BeachTexas20.4°C
Jamaica BeachTexas20.4°C
Boca Chica BeachTexas20.4°C
North Padre Island BeachTexas20.3°C
Pawleys IslandSouth Carolina19.7°C
Hunting IslandSouth Carolina19.6°C
Myrtle Beach State ParkSouth Carolina19.6°C
Cherry Grove BeachSouth Carolina19.6°C
Isle of PalmsSouth Carolina19.4°C
Coligny BeachSouth Carolina19.4°C
Garden City BeachSouth Carolina19.3°C
Kiawah BeachwalkerSouth Carolina19.3°C
Edisto BeachSouth Carolina19.2°C
Coligny Beach ParkSouth Carolina19.2°C
Litchfield BeachSouth Carolina19.1°C
Surfside BeachSouth Carolina19.1°C
Myrtle BeachSouth Carolina19.0°C
Kiawah BeachSouth Carolina19.0°C
Hilton HeadSouth Carolina19.0°C
North Myrtle BeachSouth Carolina18.9°C
Sullivan's IslandSouth Carolina18.9°C
Driessen BeachSouth Carolina18.8°C
Fripp IslandSouth Carolina18.8°C
Seabrook IslandSouth Carolina18.7°C
Frisco BeachNorth Carolina18.7°C
Corolla BeachNorth Carolina18.6°C
Fort Macon BeachNorth Carolina18.6°C
Folly BeachSouth Carolina18.5°C
Hilton Head BeachSouth Carolina18.5°C
Rodanthe BeachNorth Carolina18.5°C
Buxton BeachNorth Carolina18.5°C
Emerald Isle BeachNorth Carolina18.5°C
Fort Fisher BeachNorth Carolina18.5°C
Wrightsville BeachNorth Carolina18.4°C
Hatteras BeachNorth Carolina18.4°C
Surf City NCNorth Carolina18.3°C
Emerald IsleNorth Carolina18.3°C
Litchfield BeachSouth Carolina18.3°C
Cape Hatteras BeachNorth Carolina18.3°C
Ocracoke BeachNorth Carolina18.3°C
Oak Island BeachNorth Carolina18.2°C
Bald Head Island BeachNorth Carolina18.1°C
Sunset Beach NCNorth Carolina18.1°C
Carolina BeachNorth Carolina18.0°C
Nags HeadNorth Carolina17.9°C
Kill Devil HillsNorth Carolina17.9°C
Atlantic BeachNorth Carolina17.9°C
Topsail BeachNorth Carolina17.8°C
Avon BeachNorth Carolina17.8°C
Ocean Isle BeachNorth Carolina17.8°C
Laguna Main BeachSouthern California17.7°C
Nicholas Canyon BeachSouthern California17.7°C
Crescent BaySouthern California17.6°C
Bolsa ChicaSouthern California17.6°C
Topanga BeachSouthern California17.6°C
Duck BeachNorth Carolina17.6°C
El Pescador State BeachSouthern California17.6°C
Carbon BeachSouthern California17.6°C
Las Tunas State BeachSouthern California17.6°C
Point Fermin BeachSouthern California17.6°C
1000 Steps BeachSouthern California17.6°C
La Jolla ShoresSouthern California17.5°C
Del Mar BeachSouthern California17.5°C
Carlsbad State BeachSouthern California17.5°C
Doheny State BeachSouthern California17.5°C
Long BeachSouthern California17.5°C
Belmont Shore BeachSouthern California17.5°C
D Street BeachSouthern California17.5°C
Holden BeachNorth Carolina17.5°C
Moonlight BeachSouthern California17.4°C
TrestlesSouthern California17.4°C
Kure BeachNorth Carolina17.4°C
Kitty Hawk BeachNorth Carolina17.4°C
Escondido BeachSouthern California17.4°C
Latigo Shore BeachSouthern California17.4°C
Royal Palms BeachSouthern California17.4°C
Del Mar City BeachSouthern California17.4°C
Bogue Banks Salter PathNorth Carolina17.4°C
Seal BeachSouthern California17.3°C
Hermosa BeachSouthern California17.3°C
Manhattan BeachSouthern California17.3°C
DockweilerSouthern California17.3°C
Zuma BeachSouthern California17.3°C
Shaw's CoveSouthern California17.3°C
Sunset CliffsSouthern California17.3°C
Redondo BeachSouthern California17.2°C
El Matador State BeachSouthern California17.2°C
Baby BeachSouthern California17.2°C
Children's Pool BeachSouthern California17.2°C
Ocean Beach San DiegoSouthern California17.2°C
Salt CreekSouthern California17.1°C
Surfrider BeachSouthern California17.1°C
Point DumeSouthern California17.1°C
La Piedra State BeachSouthern California17.1°C
Puerco BeachSouthern California17.1°C
Corral BeachSouthern California17.1°C
Dan Blocker BeachSouthern California17.1°C
Swami'sSouthern California17.0°C
San Clemente PierSouthern California17.0°C
Venice BeachSouthern California17.0°C
Will RogersSouthern California17.0°C
South Carlsbad State BeachSouthern California17.0°C
Cardiff ReefSouthern California17.0°C
Mission BeachSouthern California16.9°C
Solana BeachSouthern California16.9°C
Leo CarrilloSouthern California16.9°C
Paradise CoveSouthern California16.9°C
Torrance BeachSouthern California16.9°C
Little Corona BeachSouthern California16.9°C
Black's BeachSouthern California16.8°C
Huntington BeachSouthern California16.8°C
Sunset BeachSouthern California16.8°C
Corona del Mar State BeachSouthern California16.8°C
North Beach San ClementeSouthern California16.8°C
Tamarack BeachSouthern California16.8°C
Silver Strand State BeachSouthern California16.8°C
Coronado BeachSouthern California16.7°C
La Jolla CoveSouthern California16.7°C
Oceanside BeachSouthern California16.7°C
Santa Monica BeachSouthern California16.7°C
Westward BeachSouthern California16.7°C
Thousand Steps BeachSouthern California16.7°C
Aliso BeachSouthern California16.7°C
Capistrano BeachSouthern California16.7°C
San Onofre State BeachSouthern California16.7°C
Fletcher CoveSouthern California16.7°C
Torrey Pines State BeachSouthern California16.7°C
Newport BeachSouthern California16.6°C
Huntington State BeachSouthern California16.6°C
Victoria BeachSouthern California16.6°C
Dog Beach San DiegoSouthern California16.6°C
Cardiff State BeachSouthern California16.5°C
Balboa BeachSouthern California16.5°C
Malibu Colony BeachSouthern California16.5°C
La Costa BeachSouthern California16.5°C
Grand Avenue BeachSouthern California16.5°C
Marina del Rey BeachSouthern California16.5°C
Poche BeachSouthern California16.5°C
Buccaneer BeachSouthern California16.5°C
Ponto BeachSouthern California16.5°C
Imperial BeachSouthern California16.5°C
Cabrillo BeachSouthern California16.4°C
Amarillo BeachSouthern California16.4°C
Alamitos BeachSouthern California16.4°C
Fiesta IslandSouthern California16.4°C
Pacific BeachSouthern California16.3°C
Crystal CoveSouthern California16.3°C
Woods CoveSouthern California16.3°C
Avila BeachCentral California14.6°C
Carmel BeachCentral California14.6°C
Jade CoveCentral California14.6°C
Refugio State BeachCentral California14.5°C
Moonstone BeachCentral California14.5°C
Santa Cruz Main BeachCentral California14.4°C
Pfeiffer BeachCentral California14.4°C
Willow Creek BeachCentral California14.4°C
Arroyo Burro BeachCentral California14.4°C
Hollywood Beach OxnardCentral California14.4°C
Baker BeachCentral California14.3°C
Monastery BeachCentral California14.3°C
Capitola BeachCentral California14.2°C
Rincon BeachCentral California14.2°C
Emma Wood State BeachCentral California14.2°C
Solimar BeachCentral California14.2°C
La Conchita BeachCentral California14.1°C
Sand Dollar BeachCentral California14.0°C
El Capitan State BeachCentral California14.0°C
Butterfly BeachCentral California13.9°C
East Beach Santa BarbaraCentral California13.8°C
Morro Bay BeachCentral California13.7°C
Grover BeachCentral California13.7°C
Pismo BeachCentral California13.6°C
Monterey State BeachCentral California13.6°C
Stinson BeachCentral California13.6°C
East BeachCentral California13.6°C
Silver Strand Beach VenturaCentral California13.6°C
Cayucos BeachCentral California13.5°C
Carmel River State BeachCentral California13.5°C
Oceano DunesCentral California13.5°C
West BeachCentral California13.5°C
Mondos CoveCentral California13.5°C
Jalama BeachCentral California13.4°C
Leadbetter BeachCentral California13.4°C
Ventura BeachCentral California13.4°C
Faria BeachCentral California13.4°C
Stone HarborNew Jersey12.7°C
Bay Head BeachNew Jersey12.7°C
Seaside HeightsNew Jersey12.6°C
Brigantine BeachNew Jersey12.6°C
Margate BeachNew Jersey12.6°C
Belmar BeachNew Jersey12.5°C
Manasquan BeachNew Jersey12.5°C
Beach HavenNew Jersey12.4°C
Wildwood BeachNew Jersey12.4°C
Cape May BeachNew Jersey12.4°C
Sea Isle CityNew Jersey12.3°C
Harvey Cedars BeachNew Jersey12.3°C
Longport BeachNew Jersey12.3°C
Spring Lake BeachNew Jersey12.2°C
Sunset Beach NJNew Jersey12.2°C
Avalon BeachNew Jersey12.1°C
Long Beach IslandNew Jersey12.0°C
Island Beach State ParkNew Jersey12.0°C
Surf City Beach NJNew Jersey12.0°C
Ocean City NJNew Jersey11.9°C
Bradley BeachNew Jersey11.9°C
Long Branch BeachNew Jersey11.8°C
Ventnor BeachNew Jersey11.7°C
Deal BeachNew Jersey11.7°C
Ocean Grove BeachNew Jersey11.7°C
Mantoloking BeachNew Jersey11.7°C
Barnegat Light BeachNew Jersey11.7°C
Point Pleasant BeachNew Jersey11.6°C
North Wildwood BeachNew Jersey11.6°C
Lavallette BeachNew Jersey11.5°C
Loveladies BeachNew Jersey11.5°C
Asbury Park BeachNew Jersey11.4°C
Atlantic City BeachNew Jersey11.4°C
Wildwood Crest BeachNew Jersey11.4°C
Sandy HookNew Jersey11.3°C
Ship Bottom BeachNew Jersey11.3°C
Georgica BeachNew York11.3°C
Brighton BeachNew York11.2°C
Rockaway BeachNew York11.1°C
Jones BeachNew York11.0°C
Cherry Grove BeachNew York11.0°C
Smith Point BeachNew York11.0°C
Westhampton BeachNew York11.0°C
Sunset Bay BeachNew York11.0°C
Main Beach East HamptonNew York10.9°C
Coney IslandNew York10.8°C
Long Beach NYNew York10.8°C
Robert MosesNew York10.8°C
Gilgo BeachNew York10.8°C
Cupsogue BeachNew York10.8°C
Ponquogue BeachNew York10.8°C
Two Mile Hollow BeachNew York10.8°C
Woodlawn BeachNew York10.8°C
Craigville BeachMassachusetts10.7°C
Kismet BeachNew York10.7°C
Ditch PlainsNew York10.6°C
Corn Hill BeachMassachusetts10.6°C
Longnook BeachMassachusetts10.6°C
Kalmus BeachMassachusetts10.6°C
Menauhant BeachMassachusetts10.6°C
Steps BeachMassachusetts10.6°C
Point Lookout BeachNew York10.6°C
Fire IslandNew York10.5°C
Good Harbor BeachMassachusetts10.5°C
Old Silver BeachMassachusetts10.5°C
Old Silver BeachMassachusetts10.5°C
Cooper's BeachNew York10.4°C
Newcomb Hollow BeachMassachusetts10.4°C
Sea Street BeachMassachusetts10.4°C
Surf Drive BeachMassachusetts10.4°C
Fire Island BeachNew York10.4°C
Kirk Park BeachNew York10.4°C
Montauk BeachNew York10.3°C
Mayflower BeachMassachusetts10.3°C
Surfside Beach NantucketMassachusetts10.3°C
Head of the Meadow BeachMassachusetts10.3°C
Revere BeachMassachusetts10.2°C
Singing BeachMassachusetts10.2°C
Cisco BeachMassachusetts10.2°C
Salisbury BeachMassachusetts10.2°C
Coast Guard BeachMassachusetts10.0°C
Herring CoveMassachusetts10.0°C
Madaket BeachMassachusetts10.0°C
Nantasket BeachMassachusetts9.9°C
Race PointMassachusetts9.9°C
White Crest BeachMassachusetts9.9°C
Cahoon Hollow BeachMassachusetts9.9°C
Craigville BeachMassachusetts9.9°C
South Beach EdgartownMassachusetts9.8°C
Cold Storage BeachMassachusetts9.8°C
Menemsha BeachMassachusetts9.8°C
Horseneck BeachMassachusetts9.7°C
Nauset BeachMassachusetts9.7°C
WingaersheekMassachusetts9.5°C
Marconi BeachMassachusetts9.5°C
Skaket BeachMassachusetts9.5°C
West Dennis BeachMassachusetts9.5°C
Aquinnah Public BeachMassachusetts9.5°C
Duxbury BeachMassachusetts9.5°C

Sea temperature in United States — FAQ

How warm is the sea in United States in November?

The sea off United States averages about 22.0°C in November, based on long-term monthly averages for this coast.

When is the best time to swim in United States?

United States is warmest in July (around 28.0°C) and coldest in January (around 18.0°C). There are typically 7 months a year when the water sits above 22°C.

What is the average yearly sea temperature in United States?

Across all twelve months, the sea in United States averages about 22.8°C.

Do you need a wetsuit to swim in United States?

In peak season (around July, ~28.0°C) most swimmers are comfortable without a wetsuit. Outside summer, when the water drops toward 18.0°C, a 3/2mm to 5/4mm wetsuit is recommended.