How Crowded Is Dry Tortugas in September?
September is a quiet month at Dry Tortugas National Park, running about 0.8× the park's average month — roughly 7% of the year's visitors come in September. That puts it between the June peak and the October low. Overall our best-time score rates September as "Fair" for a visit. Typical September weather averages a high near 89°F and a low around 78°F, with about 7.2" of precipitation. You'll get about 12.1 hours of daylight to explore.
Frequently Asked Questions
September is quiet at Dry Tortugas National Park (about 0.8× the average month). Our best-time score rates it "Fair". The single best month overall is February.
The busiest month is June and the quietest is October. September sits at about 0.8× the park's average, or 7% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.