Current sea water temperature:
+39.7°F
| Minimum sea water temperature in December: | 52.0°F |
| Maximum sea water temperature in December: | 39.0°F |
| Average sea water temperature in December: | 45.8°F |
| more information | |
14 days
forecast
forecast
| New Haven |
monthly
weather
weather
| New Haven |
Sea water temperature for the last 10 days:
| December 30 | 39.7°F | December 25 | 40.5°F |
| December 29 | 39.2°F | December 24 | 41.4°F |
| December 28 | 39.0°F | December 23 | 41.2°F |
| December 27 | 41.0°F | December 22 | 41.2°F |
| December 26 | 41.2°F | December 21 | 41.0°F |
Monthly sea water temperature, °F
When is the warmest sea in New Haven?
Based on the data about daily sea water temperature for the last three years the warmest sea in New Haven was noticed in August, July and September.
Monthly Sea Temperatures in New Haven, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 73.7°F. The highest and lowest sea temperatures during the month were 76.5°F and 70.9°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 72.7°F. The highest and lowest sea temperatures during the month were 76.6°F and 67.8°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.
current
weather
weather
| New Haven |
weather in
January
January
| New Haven |
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: 18:21
December 30, tuesday
2100
27°F
E
18 mph
18 mph
December 31, wednesday
0000
27°F
E
17 mph
17 mph
0300
25°F
E
16 mph
16 mph
0600
25°F
E
15 mph
15 mph
0900
27°F
NE
14 mph
14 mph
1200
32°F
NE
15 mph
15 mph
1500
36°F
NE
14 mph
14 mph
1800
32°F
NE
16 mph
16 mph
