Fire Island National Seashore in September
September at Fire Island National Seashore averages a daytime high near 73°F and an overnight low around 61°F, with about 4.4" of precipitation. Visitation runs about 1.4× the park's average month, which makes September a busy month here.
- Average low
- 61°F
- Average high
- 73°F
Range across the year: 26°F to 80°F
- Precipitation
- 4.4 in
- Daylight
- 12.3 hours
Roughly 12% of the park's yearly visitors come in September: about 39,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes September the 4th-busiest of the park's twelve months, sitting between the August peak (2.6×) and the January low (0.2×).
On our Best Time to Visit score September rates 66/100 ("Good"). Our recommended month is May: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 67°F is a comfortable range for hiking and being outdoors all day. These figures are 1991–2020 NOAA climate normals from the nearest station, about 5 miles from the park.
Because June, July and August together draw about 55% of annual visitors, choosing September instead steps outside that summer crush — the single biggest lever on how crowded the park feels.
You'll have about 12.3 hours of daylight in September to explore — between the 9.1-hour midwinter low and the 14.9-hour summer high.
Park-wide, 2025 drew 305,520 recreation visits, up 0.6% from 303,731 in 2024.
Across the past decade overall visitation has eased about 16.8%, so September may feel a touch quieter than it once did.
How September compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| August | 80°F / 69°F | 2.6× Very busy | 40 Poor |
| September | 73°F / 61°F | 1.4× Busy | 66 Good |
| October | 63°F / 50°F | 0.9× Average | 61 Good |
All twelve months at Fire Island, with the best time to visit.
Things to do at Fire Island in September
The National Park Service tags 5 Fire Island activities for fall. Each links to the park's own page for it.
- Boating Fire Island · reservation required
- Burma Trail
- Birding at Fire Island
- Fishing Fire Island
- Tour the Tower!
Frequently Asked Questions
September averages a daytime high near 73°F and an overnight low around 61°F at Fire Island National Seashore, with about 4.4 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 5 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is busy at Fire Island National Seashore (about 1.4× the average month). Our best-time score rates it "Good" at 66/100. Our recommended month is May.
The busiest month is August and the quietest is January. September sits at about 1.4× the park's average, or 12% of annual visitation.
A typical September sees about 39,000 recreation visits at Fire Island National Seashore, based on National Park Service monthly counts from 1979–2025.
Where to stay near Fire Island in September
Booking a September trip to Fire Island National Seashore? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Fire Island
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
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See the full ranking of the best national parks to visit in September.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.