Weather in Sea Isle City: January
 |
Average day temperature: | 39.7°F |
| Average night temperature: | 34.7°F | |
 |
Sea water temperature: | 41.7°F |
 |
Number of sunny days: | 13 days |
| Day length: | 9.5 - 10.2 hours | |
 |
Number of days with precipitation: | 3 days |
| Precipitation totals: | 1.1 in. | |
| more information | ||
forecast
| Sea Isle City |
temperature
| Sea Isle City |
Air temperature in January, °F
The highest day temperature during January of 2026 was 52°F. At the same time the lowest night temperature was 11°F. Daily and nightly averages during January were 36.0°F and 29.4°F.
Sea water temperature in Sea Isle City in January, °F
The average sea water temperature in January of 2026 was 39.0°F. The highest and lowest sea temperatures during the month were 41.0°F and 34.2°F.
Mostly all days in January are sunny but cloudy days are also possible.
Precipitation total in January, in.
Precipitation total value in Sea Isle City in January is 1.1 in. Other months of the year show relatively similar values.
The average wind speed value in January is 11.7 mph It makes January most windy month of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in January is: 5.9.
Best time for vacation in Sea Isle City
Sea Isle City on a weather map
4 mph
6 mph
7 mph
8 mph
6 mph
1 mph
6 mph
5 mph
