18.03
wed
wed
Day
36°F
S 7 mph
Precip.
0%
0%
Night
28°F
N 5 mph
Precip.
0%
0%
19.03
thu
thu
Day
36°F
N 7 mph
Precip.
0%
0%
Night
37°F
NE 7 mph
Precip.
0%
0%
20.03
fri
fri
Day
46°F
NE 6 mph
Precip.
0%
0%
Night
41°F
NE 15 mph
Precip.
100%
100%
21.03
sat
sat
Day
52°F
SW 9 mph
Precip.
0%
0%
Night
45°F
SW 1 mph
Precip.
0%
0%
22.03
sun
sun
Day
50°F
NE 11 mph
Precip.
0%
0%
Night
46°F
N 12 mph
Precip.
0%
0%
23.03
mon
mon
Day
45°F
S 14 mph
Precip.
100%
100%
Night
36°F
S 12 mph
Precip.
44%
44%
24.03
tue
tue
Day
37°F
S 11 mph
Precip.
100%
100%
Night
37°F
NE 4 mph
Precip.
0%
0%
sea water
temperature
temperature
| Fire Island |
monthly
weather
weather
| Fire Island |
current
weather
weather
| Fire Island |
14 days
forecast
forecast
| Fire Island |
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 37.1°F. The highest and lowest sea temperatures during the month were 41.2°F and 34.3°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 46.2°F. The highest and lowest sea temperatures during the month were 50.2°F and 43.5°F.
Air temperature in Fire Island, °F
Precipitation total in Fire Island, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Fire Island
Fire Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Fire Island
Local time: 17:34
March 18, wednesday
1800
36°F
N
6 mph
6 mph
2100
30°F
N
6 mph
6 mph
March 19, thursday
0000
28°F
N
5 mph
5 mph
0300
25°F
N
5 mph
5 mph
0600
27°F
N
3 mph
3 mph
0900
30°F
NW
6 mph
6 mph
1200
36°F
N
7 mph
7 mph
1500
41°F
N
10 mph
10 mph
