How Crowded Is Fort Sumter and Fort Moultrie in September?
September is a quiet month at Fort Sumter and Fort Moultrie National Historical Park, running about 0.7× the park's average month — roughly 6% of the year's visitors come in September. That puts it between the July peak and the January low. Overall our best-time score rates September as "Good" for a visit. Typical September weather averages a high near 86°F and a low around 68°F, with about 5.5" of precipitation. You'll get about 12.2 hours of daylight to explore.
Frequently Asked Questions
September is quiet at Fort Sumter and Fort Moultrie National Historical Park (about 0.7× the average month). Our best-time score rates it "Good". The single best month overall is September.
The busiest month is July and the quietest is January. September sits at about 0.7× the park's average, or 6% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.