Measurements:
°C
°F
CURRENT WEATHER
17:28
Fire Island
84°F
E 6 mph
Feels like: 84°F
Precip: 2%
World Resorts USA Fire Island Weather

7 Day Weather Forecast

08.25
tue
DAY
78°F
E 9 mph
precip
6%
NIGHT
68°F
SE 7 mph
precip
10%
08.26
wed
DAY
80°F
NE 5 mph
precip
1%
NIGHT
76°F
NE 9 mph
precip
22%
08.27
thu
DAY
84°F
N 11 mph
precip
17%
NIGHT
76°F
N 4 mph
precip
26%
08.28
fri
DAY
86°F
NE 7 mph
precip
3%
NIGHT
74°F
SE 8 mph
precip
24%
08.29
sat
DAY
78°F
S 5 mph
precip
7%
NIGHT
70°F
NE 5 mph
precip
15%
08.30
sun
DAY
82°F
N 7 mph
precip
13%
NIGHT
74°F
N 4 mph
precip
43%
08.31
mon
DAY
84°F
SE 7 mph
precip
9%
NIGHT
78°F
NW 2 mph
precip
5%

Fire Island Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Fire Island was 25.0°F. The maximum and minimum values were 23.0°F and 26.7°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 79.1 °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