Measurements:
°C
°F
New Haven
58°F
SE 16 mph
Feels like: 54°F
Precip: 1%
World Resorts USA New Haven Weather

New Haven Sea Water Temperature

Current Sea Water Temperature:
+68.0°F
Maximum Sea Water Temperature in October: 72.6°F
Minimum Sea Water Temperature in October: 59.4°F
Average water temperature in October: 65.8°F

Sea Water Temperature for the Last 10 Days:

October 05 68.0°F September 30 68.0°F
October 04 68.8°F September 29 67.8°F
October 03 69.0°F September 28 70.2°F
October 02 69.4°F September 27 70.0°F
October 01 68.8°F September 26 70.0°F

When is the Warmest Sea for New Haven?

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

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for New Haven was 77.7°F. The maximum and minimum values were 75.6°F and 80.8°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for New Haven was 74.3°F. The maximum and minimum values were 72.0°F and 77.2°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for New Haven was 73.7°F. The maximum and minimum values were 67.8°F and 77.0°F respectively.

Best Time to Visit New Haven
The most sunny months:
November 16 days
June 14 days
August 13 days
The most warm months:
July 84.5 °F
August 82.4 °F
June 77.5 °F
Warmest sea temperature:
August 77.1 °F
July 75.5 °F
September 73.7 °F
The most cold months:
January 34.2 °F
February 35.2 °F
December 39.4 °F
The most rainy months:
July 3 days
August 3 days
April 3 days
The most windy months:
January 10 mph
November 10 mph
December 10 mph

New Haven on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +62
Hawaii +82
Houston +86
Las Vegas +92
Los Angeles +100
Maui +74
Miami +88
Myrtle Beach +70
New York +62
San Diego +84
San Francisco +66
Santa Monica +94
Sarasota +84
Washington +64
24 Hours Weather Forecast
New Haven
Local time: 19:51
05 oct, monday
2100 58°F
SE
16 mph
06 oct, tuesday
0000 52°F
SE
12 mph
0300 50°F
SE
14 mph
0600 46°F
SE
13 mph
0900 48°F
SE
8 mph
1200 56°F
SE
9 mph
1500 62°F
SE
9 mph
1800 58°F
SE
7 mph