Fire Island Weather: December
 |
Average Day Temperature: | 41.5°F |
|
Average Night Temperature: | 36.5°F |
|
Sea Water Temperature: | 47.3°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 9.2 - 9.5 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 1.6 in | |
| detailed information | ||
forecast
| Fire Island |
Temperature
| Fire Island |
Air Temperature in December, °F
The highest day temperature in December 2025 was 55°F. The lowest night temperature was 11°F. The average values for day and night temperatures during December were 36.7°F и 27.8°F respectivly.
Fire Island Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Fire Island was 44.7°F. The maximum and minimum values were 40.8°F and 51.2°F respectively.
You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in December, in
Precipitation total in December for Fire Island is 1.6 in. It makes december one of the most rainy months of the year.
The average wind speed in December is 11.4 mph. It makes December one of the most windy months of the year for Fire Island.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Fire Island in December is 5.2 hours.
Fire Island on the Weather Map
| Boston |  |
+58 |
| Chicago | |
+62 |
| Hawaii |  |
+82 |
| Houston |  |
+86 |
| Las Vegas |  |
+92 |
| Los Angeles | |
+100 |
| Maui | |
+74 |
| Miami | |
+88 |
| Myrtle Beach | |
+70 |
| New York | |
+62 |
| San Diego | |
+84 |
| San Francisco | |
+66 |
| Santa Monica | |
+94 |
| Sarasota | |
+84 |
| Washington | |
+64 |
| 2100 |  |
62°F | SE 14 mph |
| 0000 | |
56°F | SE 12 mph |
| 0300 | |
54°F | SE 12 mph |
| 0600 | |
50°F | SE 13 mph |
| 0900 |  |
52°F | SE 11 mph |
| 1200 | |
58°F | SE 9 mph |
| 1500 | |
64°F | SE 10 mph |
| 1800 | |
62°F | SE 9 mph |