SwimTemperature logoSwimTemperature
Open live map
Seasonal ranking

Warmest sea temperature in United States in May

Where the sea is warmest across United States during May, ranked by long-term monthly average water temperature. Bahia Honda (Florida Keys, United States) tops the list at around 28°C. Open any spot for today's live water temperature and a 7-day swim forecast.

  1. 1
    Bahia Honda
    Florida Keys · United States · Atlantic Ocean
    Warm — comfortable swimming
    28°C
    May average
  2. 2
    Sombrero Beach
    Florida Keys · United States · Atlantic Ocean
    Warm — comfortable swimming
    28°C
    May average
  3. 3
    Smathers Beach
    Florida Keys · United States · Atlantic Ocean
    Warm — comfortable swimming
    28°C
    May average
  4. 4
    Zoni Beach
    Puerto Rico · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  5. 5
    Sun Bay
    Puerto Rico · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  6. 6
    Playa Jobos
    Puerto Rico · United States · Atlantic Ocean
    Warm — comfortable swimming
    28°C
    May average
  7. 7
    Buye Beach
    Puerto Rico · United States · Atlantic Ocean
    Warm — comfortable swimming
    28°C
    May average
  8. 8
    Playa Santa
    Puerto Rico · United States · Atlantic Ocean
    Warm — comfortable swimming
    28°C
    May average
  9. 9
    Caja de Muertos
    Puerto Rico · United States · Atlantic Ocean
    Warm — comfortable swimming
    28°C
    May average
  10. 10
    Seven Seas Beach
    Puerto Rico · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  11. 11
    Playa Azul
    Puerto Rico · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  12. 12
    Playa Mar Chiquita
    Puerto Rico · United States · Atlantic Ocean
    Warm — comfortable swimming
    28°C
    May average
  13. 13
    Cerro Gordo
    Puerto Rico · United States · Atlantic Ocean
    Warm — comfortable swimming
    28°C
    May average
  14. 14
    Ocean Park Beach
    Puerto Rico · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  15. 15
    Isla Verde Beach
    Puerto Rico · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  16. 16
    Pinones Beach
    Puerto Rico · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  17. 17
    Playa El Convento
    Puerto Rico · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  18. 18
    Playa Punta Santiago
    Puerto Rico · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  19. 19
    Steps Beach
    Puerto Rico · United States · Atlantic Ocean
    Warm — comfortable swimming
    28°C
    May average
  20. 20
    Cinnamon Bay
    US Virgin Islands · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  21. 21
    Coki Beach
    US Virgin Islands · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  22. 22
    Sandy Point
    US Virgin Islands · United States · Caribbean Sea
    Warm — comfortable swimming
    28°C
    May average
  23. 23
    South Beach
    Florida Atlantic · United States · Atlantic Ocean
    Warm — comfortable swimming
    27°C
    May average
  24. 24
    Bal Harbour Beach
    Florida Atlantic · United States · Atlantic Ocean
    Warm — comfortable swimming
    27°C
    May average
  25. 25
    Sunny Isles Beach
    Florida Atlantic · United States · Atlantic Ocean
    Warm — comfortable swimming
    27°C
    May average

Warmest sea in May elsewhere

EuropeNorth AmericaSouth AmericaAsiaAfricaOceaniaUnited KingdomAustraliaSpainItalyFranceGreeceMexicoPortugalNew ZealandCanadaCroatiaIrelandThailandIndonesiaBrazilPhilippinesPolandSwedenDenmarkTurkeyJapanGermanyNorway

United States in May — frequently asked questions

Where is the sea warmest in United States in May?
Bahia Honda in United States has the warmest sea in United States in May, averaging about 28.0 °C. Sombrero Beach (28.0 °C) and Smathers Beach follow close behind.
How many beaches in United States are warm enough to swim in May?
25 of the top 25 ranked beaches in United States average 22 °C or more in May, which most swimmers find comfortable without a wetsuit.
How are these May sea temperatures calculated?
Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical May rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.

Explore every sea temperature page

Jump straight to a country, coastal region, city, seasonal ranking or comparison.

Sea temperature by country

United StatesUnited KingdomAustraliaSpainItalyFranceGreeceMexicoPortugalNew ZealandCanadaCroatiaIrelandThailandIndonesiaBrazilPhilippinesPolandSwedenDenmarkTurkeyJapanGermanyNorwayNetherlandsCyprusBulgariaIndiaSouth AfricaEgyptDominican RepublicSri LankaAll destinations →

Coastal region hubs

New South WalesSardiniaAlgarveAquitaineCornwallSicilyWestern AustraliaTuscanyVictoriaBaliNorth IslandLanguedocLiguriaBrittanyIstriaSilver CoastPacific CoastApuliaBritish ColumbiaCosta del SolDevonNova ScotiaGaliciaMallorca

Water temperature today by city

LondonManchesterBirminghamEdinburghGlasgowDublinParisLyonToulouseBordeauxMadridBarcelonaSevilleLisbonPortoRomeMilanFlorenceNaplesBerlin

Warmest sea in August

EuropeNorth AmericaSouth AmericaAsiaAfricaOceaniaUnited StatesUnited KingdomAustraliaSpainItalyFranceGreeceMexicoPortugalNew ZealandCanadaCroatiaIrelandThailandWarmest right now →

Warmest sea month by month (Europe)

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember

Popular beach comparisons

Platja d'Aro vs Platja de Sant PolCala Sa Tuna vs AiguablavaCala Pola vs Platja GranCala Montjoi vs Platja de PalsPlatja de Pals vs Cala Sa TunaCala Estreta vs Platja d'AroPlatja de Lloret vs Platja GranPlatja de la Pineda vs Salou LevantePlatja Llarga vs Platja del MiracleCambrils Playa vs Salou LevantePlaya del Postiguet vs Playa de San JuanPlaya de San Juan vs Playa del Postiguet SurPlaya de Levante vs Playa de PonienteCala Finestrat vs Playa de PonientePlaya del Albir vs Playa de LevantePlaya de la Fossa vs Cala BaladrarCala el Portet vs Cala del MoraigPlaya del Arenal vs Cala GranadellaCompare any two beaches →

Freshwater swimming

All lake water temperatures (525)Live lake mapCompare lakesRivers & swimming holesLive sea temperature mapSwimming guides

Keep exploring

Live sea temperature mapEvery coast, updated hourlyWarmest beaches todayLive ranking right nowCompare two beachesSide-by-side swim conditionsLake water temperaturesFreshwater swimming spotsRivers & swimming holesWild swimming conditionsAll destinationsBrowse by country & region

Warmest sea this month

europenorth americaasiaoceania