Gulf Islands National Seashore in September
In September, Gulf Islands National Seashore averages a high of 88°F and a low of 69°F, with 5.6 inches of precipitation (rain plus melted snow). About 624,000 people visit, the 7th busiest of 12 (busy). Days are 12 hours 19 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 88° / 69°F
- Precipitation
- 5.6in
- Snow
- –in
- Daylight
- 12h 19m
- Visitors
- 624,000
- Crowds
- Busy
Best months for weather and crowds instead: January (moderate), November (moderate) and December (moderate).
Weather 1991–2020 averages at Chactaw Nolf Milton, FL, 11 miles from the park's center, 102 ft. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in September
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Natchez Trace Parkway | 88° / 64° | Very busy | Hot |
| Kennesaw Mountain National Battlefield Park | 80° / 62° | Very busy | Mild |
| Chattahoochee River National Recreation Area | 83° / 63° | Very busy | Hot |
| Timucuan Ecological and Historic Preserve | 86° / 73° | Busy | Hot |
| Canaveral National Seashore | 88° / 71° | Busy | Hot |
Closures, reservations and alerts: Gulf Islands National Seashore on nps.gov
All twelve months at Gulf Islands National Seashore · National parks to visit in September