The highest day temperature in April 2025 was 74°F. The lowest night temperature was 28°F. The average values for day and night temperatures during April were 55.6°F и 46.1°F respectivly.

The average sea surface temperature in April 2025 for Fire Island was 45.8°F. The maximum and minimum values were 42.8°F and 50.2°F respectively.

Most of the days in April are gloomy but you can also expect sunny days.

Precipitation total in April for Fire Island is 1.4 in. It makes april one of the most rainy months of the year.

The average wind speed in April is 11.4 mph. It makes April 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 April is 6.5 hours.