30.08
sun
sun
Day
79°F
NE 11 mph
Precip.
12%
12%
Night
66°F
S 6 mph
Precip.
55%
55%
31.08
mon
mon
Day
77°F
NW 2 mph
Precip.
13%
13%
Night
72°F
N 5 mph
Precip.
22%
22%
01.09
tue
tue
Day
77°F
NE 6 mph
Precip.
39%
39%
Night
66°F
W 19 mph
Precip.
74%
74%
02.09
wed
wed
Day
66°F
SW 12 mph
Precip.
44%
44%
Night
68°F
NW 9 mph
Precip.
81%
81%
03.09
thu
thu
Day
77°F
NE 7 mph
Precip.
36%
36%
Night
73°F
SW 6 mph
Precip.
20%
20%
04.09
fri
fri
Day
75°F
W 6 mph
Precip.
11%
11%
Night
70°F
N 8 mph
Precip.
77%
77%
05.09
sat
sat
Day
81°F
NE 11 mph
Precip.
6%
6%
Night
70°F
SE 7 mph
Precip.
21%
21%
sea water
temperature
temperature
| New Haven |
monthly
weather
weather
| New Haven |
current
weather
weather
| New Haven |
14 days
forecast
forecast
| New Haven |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 74.9°F. The highest and lowest sea temperatures during the month were 77.7°F and 73.0°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 70.6°F. The highest and lowest sea temperatures during the month were 72.9°F and 69.3°F.
Air temperature in New Haven, °F
Precipitation total in New Haven, in.
* Charts above show average data for the last 3 years.
Best time for vacation in New Haven
New Haven on a weather map
Places in USA:
Name
°F
24 Hours Forecast
New Haven
Local time: 04:05
August 30, sunday
0600
61°F
E
5 mph
5 mph
0900
70°F
E
6 mph
6 mph
1200
79°F
NE
11 mph
11 mph
1500
81°F
NE
14 mph
14 mph
1800
79°F
NE
12 mph
12 mph
2100
73°F
NE
7 mph
7 mph
August 31, monday
0000
66°F
S
6 mph
6 mph
0300
66°F
SE
1 mph
1 mph
