The highest day temperature in December 2023 was 55°F. The lowest night temperature was 27°F. The average values for day and night temperatures during December were 45.4°F и 40.6°F respectivly.

The average sea surface temperature in December 2023 for Fire Island was 45.5°F. The maximum and minimum values were 40.6°F and 49.2°F respectively.

You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in December for Fire Island is 2.1 in. It makes december the most rainy month of the year.

The average wind speed in December is 11.6 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 4.9 hours.