Fire Island Sea Temperature in April

Looking to find out what the average sea water temperature in Fire Island is for April? Find out what the lowest, highest, and average water temperatures are for Fire Island over the past 10 years.

Average water temperature in Fire Island for April

The average, high, and low temperatures below should help you if you can swim in the water in Fire Island in April.

8.03° C

(46.46° F)

  • highest: 12.2° C (53.96° F)
  • lowest: 4.01° C (39.22° F)

This water is very cold and can cause pain. We don't recommend you swim in this temperature for anything other than very short swims of 5 to 10 minutes unless you are a very experienced cold water swimmer.

Water temperature range by day in April in Fire Island

The chart below shows the range of low and high temperatures by day for the month of April in Fire Island.

Water temperatures for April in Fire Island in recent years

Day 2024 2023 2022 2021
1 7.68° C 6.94° C 6.39° C 7.37° C
2 7.77° C 7.25° C 6.53° C 6.68° C
3 7.58° C 7.29° C 6.59° C 6.46° C
4 7.21° C 7.44° C 6.54° C 6.7° C
5 7.12° C 7.73° C 6.59° C 7.03° C
6 7.16° C 7.94° C 6.76° C 7.04° C
7 7.24° C 8° C 6.92° C 7.8° C
8 7.23° C 7.77° C 7.14° C 8.72° C
9 7.12° C 7.7° C 7.39° C 8.9° C
10 7.05° C 7.84° C 7.58° C 9.29° C
11 7.25° C 8.04° C 7.58° C 9.11° C
12 7.85° C 8.42° C 7.34° C 7.91° C
13 8.18° C 9.27° C 7.9° C 7.65° C
14 8.05° C 9.5° C 8.12° C 8.02° C
15 8.3° C 9.48° C 9.07° C 8.61° C
16 8.91° C 9.72° C 9.2° C 8.96° C
17 9.22° C 9.95° C 9.25° C 9.03° C
18 8.83° C 10° C 8.9° C 9.66° C
19 8.08° C 9.76° C 8.54° C 9.54° C
20 8.27° C 9.75° C 8.87° C 9.41° C
21 8.3° C 9.82° C 8.8° C 9.45° C
22 8.03° C 9.83° C 9.22° C 9.13° C
23 8.77° C 10.21° C 9.65° C 8.28° C
24 9.18° C 10.5° C 9.97° C 8.5° C
25 8.82° C 10.69° C 9.54° C 9.05° C
26 8.56° C 10.76° C 9.02° C 8.96° C
27 0° C 10.76° C 9.45° C 9.2° C
28 0° C 10.56° C 9.28° C 9.79° C
29 0° C 10.4° C 9.19° C 10.53° C
30 0° C 10.3° C 9.29° C 10.43° C

Water temperature in April for locations near Fire Island

Kismet

United States, North America

3.22 miles away

Great South Bay

United States, North America

3.27 miles away

Great River

United States, North America

5.12 miles away

West Sayville

United States, North America

6.10 miles away

Robert Moses State Park

United States, North America

6.30 miles away

Islip

United States, North America

6.61 miles away

Data source and citation

Raw data for the calculations made to find the sea surface temperature in Fire Island comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.

The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.

If you'd like to use any of the information above in the format it is presented, please use the citation tool below.

  • "Fire Island Sea Temperature in April". SeaTemperatures.net. Accessed on April 28, 2024. http://seatemperatures.net/north-america/united-states/fire-island-april-temperature/.

  • "Fire Island Sea Temperature in April". SeaTemperatures.net, http://seatemperatures.net/north-america/united-states/fire-island-april-temperature/. Accessed 28 April, 2024

  • Fire Island Sea Temperature in April. SeaTemperatures.net. Retrieved from http://seatemperatures.net/north-america/united-states/fire-island-april-temperature/.