Updated October 2026
Fire Island National Seashore Weather by Month
Fire Island National Seashore is warmest in August, when the nearest NOAA climate station averages a high of 80°F and a low of 69°F, and coldest in January, with an average high of 39°F and an average low of 26°F. August is the wettest month, with about 5.8 inches of precipitation.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 5 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Fire Island National Seashore can differ from these, particularly with elevation.
Warmest month
Aug
80°F avg high
Coldest month
Jan
26°F avg low
Wettest month
Aug
5.8 in avg
Longest days
Jun
14.9 h of daylight
Average weather at Fire Island by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 39°F | 26°F | 3.5 in | 9.4 h |
| February | 40°F | 27°F | 4.6 in | 10.4 h |
| March | 46°F | 33°F | 4.4 in | 11.7 h |
| April | 56°F | 43°F | 3.8 in | 13.1 h |
| May | 64°F | 52°F | 3.5 in | 14.3 h |
| June | 74°F | 63°F | 3.7 in | 14.9 h |
| July | 80°F | 70°F | 4.7 in | 14.6 h |
| August | 80°F | 69°F | 5.8 in | 13.6 h |
| September | 73°F | 61°F | 4.4 in | 12.3 h |
| October | 63°F | 50°F | 3.6 in | 10.9 h |
| November | 53°F | 40°F | 3.0 in | 9.7 h |
| December | 44°F | 32°F | 4.9 in | 9.1 h |
| Year total | 49.9 in |
NOAA 1991–2020 climate normals from station USC00302151, 5 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Fire Island is at that time of year.
Fire Island weather by season
Winter: December to February
Average highs bottom out at 39°F in January, between 44°F in December and 40°F in February, with average lows between 26°F and 32°F. The average low is at or below freezing in all three months. Together the three months average 13 inches of precipitation, about 26% of the yearly total. Daylight is at its shortest, about 9.1 hours in December.
Spring: March to May
Average highs climb from 46°F in March to 64°F in May, with average lows between 33°F and 52°F. Together the three months average 11.7 inches of precipitation, about 23% of the yearly total. Daylight lengthens from about 11.7 hours in March to 14.3 in May.
Summer: June to August
Average highs climb from 74°F in June to 80°F in August, with average lows between 63°F and 70°F. Together the three months average 14.2 inches of precipitation, about 28% of the yearly total and more than in any other season. Daylight is at its longest, about 14.9 hours in June.
Fall: September to November
Average highs fall from 73°F in September to 53°F in November, with average lows between 40°F and 61°F. Together the three months average 11 inches of precipitation, about 22% of the yearly total and less than in any other season. Daylight shortens from about 12.3 hours in September to 9.7 in November.
What the National Park Service says about the weather
Spring: Temperatures may range from high 30s to low 50s (F). Rain and sun are equally common. Summer: Temperatures usually range from 65 F to 90 F. Fall: Temperatures from 70 F in early autumn to 40 F later in the season may be expected. Winter: Temperatures in the 30s (F) are common, with below freezing temperatures possible.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Fire Island
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 40.70°N, 73.00°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Fire Island National Seashore →
Weather and crowds together
August is both the warmest month and the busiest, with about 2.6× the visitors of the park's average month. January is the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Fire Island National Seashore. For hotels, cabins and rentals close to the park, see where to stay near Fire Island.
Where to stay near Fire Island
Picked a month for Fire Island National Seashore? Compare hotels, cabins and vacation rentals near the park with live availability and prices.
Top-rated places to stay near Fire Island
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Frequently Asked Questions
August is the warmest month at Fire Island National Seashore, with an average high of 80°F and an average low of 69°F. That is the 1991–2020 average at the nearest long-record NOAA station, 5 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Fire Island National Seashore, with an average low of 26°F and an average high of 39°F, based on NOAA 1991–2020 climate normals.
August is the wettest month, with about 5.8 inches of precipitation. November is the driest, at about 3 inches. The station records about 49.9 inches of precipitation in an average year.
Daylight at Fire Island National Seashore runs from about 9.1 hours a day in December to about 14.9 hours in June, computed from the park's latitude.
Weather at nearby parks
29 mi away · warmest in July (83°F)
45 mi away · warmest in July (86°F)
46 mi away · warmest in July (82°F)
49 mi away · warmest in July (85°F)
50 mi away · warmest in July (85°F)
51 mi away · warmest in July (85°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00302151), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1979–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.