Measurements:
°C
°F
CURRENT WEATHER
11:08
New Haven
66°F
NW 5 mph
Feels like: 66°F
Precip: 3%
World Resorts USA New Haven Weather

7 Day Weather Forecast

09.15
tue
DAY
66°F
NW 5 mph
precip
3%
NIGHT
62°F
N 6 mph
precip
7%
09.16
wed
DAY
72°F
NE 7 mph
precip
14%
NIGHT
70°F
NE 6 mph
precip
21%
09.17
thu
DAY
78°F
NE 8 mph
precip
4%
NIGHT
74°F
NE 6 mph
precip
26%
09.18
fri
DAY
78°F
SW 8 mph
precip
2%
NIGHT
66°F
SW 12 mph
precip
3%
09.19
sat
DAY
66°F
W 8 mph
precip
17%
NIGHT
72°F
N 15 mph
precip
21%
09.20
sun
DAY
78°F
E 10 mph
precip
40%
NIGHT
68°F
SW 9 mph
precip
14%
09.21
mon
DAY
66°F
SW 6 mph
precip
23%
NIGHT
62°F
W 12 mph
precip
58%

New Haven Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for New Haven was 22.7°F. The maximum and minimum values were 22.2°F and 23.5°F respectively.

New Haven on the Weather Map

Best Time to Visit New Haven
The most sunny months:
November 16 days
September 14 days
June 14 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 73.8 °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
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