Where is the sea coldest in New Jersey in September?

Sandy Hook in United States has the coldest sea in New Jersey in September, averaging about 21.0 °C. Long Branch Beach (21.0 °C) and Asbury Park Beach are the next coolest.

How many beaches in New Jersey are warm enough to swim in September?

None of the top 25 ranked beaches in New Jersey reach 22 °C in September, so a wetsuit is recommended for anything longer than a quick dip.

How are these September sea temperatures calculated?

Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical September rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.

Seasonal ranking

Coldest sea temperature in New Jersey in September

Where the sea is coolest across New Jersey during September, ranked by long-term monthly average water temperature. Sandy Hook (New Jersey, United States) is the coolest at around 21°C. Open any spot for today's live water temperature and a 7-day swim forecast.

1
Sandy Hook
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
2
Long Branch Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
3
Asbury Park Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
4
Belmar Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
5
Spring Lake Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
6
Manasquan Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
7
Point Pleasant Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
8
Seaside Heights
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
9
Lavallette Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
10
Long Beach Island
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
11
Beach Haven
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
12
Brigantine Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
13
Atlantic City Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
14
Ventnor Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
15
Margate Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
16
Ocean City NJ
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
17
Sea Isle City
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
18
Avalon Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
19
Stone Harbor
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
20
Wildwood Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
21
Cape May Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
22
Deal Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
23
Ocean Grove Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
24
Bradley Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average
25
Bay Head Beach
New Jersey · United States · Atlantic Ocean
Pleasant — swimmable without a wetsuit
21°C
September average

Coldest sea in September elsewhere

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New Jersey in September — frequently asked questions

Where is the sea coldest in New Jersey in September?: Sandy Hook in United States has the coldest sea in New Jersey in September, averaging about 21.0 °C. Long Branch Beach (21.0 °C) and Asbury Park Beach are the next coolest.
How many beaches in New Jersey are warm enough to swim in September?: None of the top 25 ranked beaches in New Jersey reach 22 °C in September, so a wetsuit is recommended for anything longer than a quick dip.
How are these September sea temperatures calculated?: Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical September rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.

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