Current sea water temperature:
+43.5°F
| Minimum sea water temperature in December: | 52.0°F |
| Maximum sea water temperature in December: | 40.3°F |
| Average sea water temperature in December: | 46.3°F |
| more information | |
14 days
forecast
forecast
| New Haven |
monthly
weather
weather
| New Haven |
Sea water temperature for the last 10 days:
| December 14 | 43.5°F | December 9 | 46.4°F |
| December 13 | 43.2°F | December 8 | 46.4°F |
| December 12 | 44.2°F | December 7 | 46.4°F |
| December 11 | 46.4°F | December 6 | 47.1°F |
| December 10 | 46.4°F | December 5 | 46.9°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
December
December
| 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: 01:47
December 15, monday
0300
14°F
SE
19 mph
19 mph
0600
12°F
SE
16 mph
16 mph
0900
18°F
SE
14 mph
14 mph
1200
27°F
SE
11 mph
11 mph
1500
28°F
E
12 mph
12 mph
1800
28°F
E
12 mph
12 mph
2100
27°F
E
11 mph
11 mph
December 16, tuesday
0000
27°F
E
12 mph
12 mph
