Measurements:
°C
°F
Sea Isle City
42°F
E 4 mph
Feels like: 38°F
Precip: 0%
World Resorts USA Sea Isle City Weather

Sea Isle City Sea Water Temperature

Current Sea Water Temperature:
+39.2°F
Maximum Sea Water Temperature in January: 45.8°F
Minimum Sea Water Temperature in January: 34.8°F
Average water temperature in January: 41.1°F

Sea Water Temperature for the Last 10 Days:

January 08 39.2°F January 03 38.4°F
January 07 38.0°F January 02 39.4°F
January 06 37.8°F January 01 40.0°F
January 05 38.6°F December 31 40.8°F
January 04 38.6°F December 30 41.2°F

When is the Warmest Sea for Sea Isle City?

According to our data for the last three years for Sea Isle City the highest average sea water temperature was in July, August and September.

Average Water Temperature by Month, °F

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Sea Isle City was 79.2°F. The maximum and minimum values were 75.0°F and 83.0°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Sea Isle City was 78.8°F. The maximum and minimum values were 75.4°F and 83.8°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Sea Isle City was 74.3°F. The maximum and minimum values were 72.6°F and 76.6°F respectively.

Best Time to Visit Sea Isle City
The most sunny months:
November 18 days
October 15 days
September 15 days
The most warm months:
July 84.5 °F
August 82.2 °F
June 77.8 °F
Warmest sea temperature:
July 77.5 °F
August 77.0 °F
September 75.4 °F
The most cold months:
January 39.2 °F
February 41.6 °F
December 44.0 °F
The most rainy months:
July 3 days
March 3 days
April 3 days
The most windy months:
March 11 mph
January 11 mph
December 11 mph

Sea Isle City on the Weather Map

USA Resorts:
NAME
Chicago +54
Hawaii +78
Honolulu +78
Houston +78
Las Vegas +54
Los Angeles +58
Maui +72
Miami +86
Miami Beach +80
New York +52
San Diego +64
San Francisco +52
Sarasota +82
Tampa +88
Washington +60
24 Hours Weather Forecast
Sea Isle City
Local time: 15:32
08 jan, thursday
1800 42°F
SE
2 mph
2100 34°F
SE
2 mph
09 jan, friday
0000 34°F
NW
2 mph
0300 32°F
NW
7 mph
0600 36°F
N
7 mph
0900 38°F
N
11 mph
1200 42°F
N
11 mph
1500 44°F
N
14 mph