Measurements:
°C
°F
Fire Island
64°F
SW 8 mph
Feels like: 64°F
Precip: 3%
World Resorts USA Fire Island Weather

14 Day Weather Forecast

09.15
tue
DAY
72°F
W 6 mph
precip
1%
NIGHT
64°F
NW 5 mph
precip
6%
09.16
wed
DAY
76°F
NE 6 mph
precip
6%
NIGHT
70°F
NE 7 mph
precip
7%
09.17
thu
DAY
78°F
NE 11 mph
precip
3%
NIGHT
76°F
NE 9 mph
precip
22%
09.18
fri
DAY
78°F
SW 9 mph
precip
9%
NIGHT
72°F
SW 9 mph
precip
16%
09.19
sat
DAY
76°F
NW 9 mph
precip
11%
NIGHT
74°F
N 14 mph
precip
24%
09.20
sun
DAY
86°F
E 9 mph
precip
12%
NIGHT
72°F
SW 8 mph
precip
6%
09.21
mon
DAY
74°F
W 7 mph
precip
11%
NIGHT
68°F
W 11 mph
precip
22%
09.22
tue
DAY
68°F
W 14 mph
precip
16%
NIGHT
68°F
W 12 mph
precip
44%
09.23
wed
DAY
80°F
E 2 mph
precip
15%
NIGHT
70°F
W 5 mph
precip
44%
09.24
thu
DAY
68°F
SW 7 mph
precip
65%
NIGHT
66°F
NW 3 mph
precip
55%
09.25
fri
DAY
78°F
E 9 mph
precip
6%
NIGHT
64°F
SE 6 mph
precip
13%
09.26
sat
DAY
68°F
NE 4 mph
precip
11%
NIGHT
64°F
W 4 mph
precip
15%
09.27
sun
DAY
68°F
SW 13 mph
precip
9%
NIGHT
62°F
SW 13 mph
precip
12%
09.28
mon
DAY
60°F
SW 11 mph
precip
12%
NIGHT
58°F
SW 9 mph
precip
14%

Fire Island Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Fire Island was 76.7°F. The maximum and minimum values were 75.0°F and 78.4°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 83.6 °F
June 78.3 °F
Warmest sea temperature:
July 79.4 °F
August 79.0 °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:
December 3 days
April 3 days
August 3 days
The most windy months:
March 11 mph
January 11 mph
November 11 mph
USA Resorts:
NAME
Boston +62
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +72
Maui +66
Miami +88
Myrtle Beach +78
New York +66
Panama City Beach +90
San Diego +70
San Francisco +60
Santa Monica +70
Sarasota +86
Washington +66
24 Hours Weather Forecast
Fire Island
Local time: 10:31
15 sep, tuesday
1200 72°F
W
6 mph
1500 72°F
NW
7 mph
1800 68°F
NW
7 mph
2100 66°F
NW
6 mph
16 sep, wednesday
0000 64°F
NW
5 mph
0300 64°F
N
2 mph
0600 64°F
NE
3 mph
0900 70°F
N
4 mph