Measurements:
°C
°F
CURRENT WEATHER
15:16
Fire Island
82°F
N 7 mph
Feels like: 86°F
Precip: 6%
World Resorts USA Fire Island Weather

7 Day Weather Forecast

08.05
wed
DAY
86°F
N 6 mph
precip
3%
NIGHT
78°F
N 8 mph
precip
29%
08.06
thu
DAY
90°F
NE 10 mph
precip
4%
NIGHT
82°F
NE 9 mph
precip
18%
08.07
fri
DAY
94°F
NE 8 mph
precip
3%
NIGHT
82°F
E 5 mph
precip
22%
08.08
sat
DAY
88°F
NE 10 mph
precip
3%
NIGHT
80°F
NE 3 mph
precip
37%
08.09
sun
DAY
92°F
E 7 mph
precip
1%
NIGHT
86°F
NE 10 mph
precip
4%
08.10
mon
DAY
94°F
NE 9 mph
precip
2%
NIGHT
86°F
SE 2 mph
precip
9%
08.11
tue
DAY
86°F
E 9 mph
precip
6%
NIGHT
80°F
NE 4 mph
precip
6%

Fire Island Sea Water Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Fire Island was 23.2°F. The maximum and minimum values were 20.9°F and 25.8°F respectively.

Fire Island on the Weather Map

Best Time to Visit Fire Island
The most sunny months:
November 16 days
September 15 days
July 14 days
The most warm months:
July 85.5 °F
August 83.0 °F
June 78.3 °F
Warmest sea temperature:
July 79.4 °F
August 78.9 °F
September 74.6 °F
The most cold months:
January 36.0 °F
February 36.9 °F
December 41.5 °F
The most rainy months:
March 3 days
December 3 days
April 3 days
The most windy months:
March 11 mph
January 11 mph
November 11 mph
more details