How Crowded Is Rock Creek in September?
Average1.1× average month · best-time score 43/100
September is an average month at Rock Creek Park, running about 1.1× the park's average month — roughly 10% of the year's visitors come in September. That puts it between the July peak and the December low. Overall our best-time score rates September as "Poor" for a visit. You'll get about 12.2 hours of daylight to explore.
Frequently Asked Questions
September is average at Rock Creek Park (about 1.1× the average month). Our best-time score rates it "Poor". The single best month overall is February.
The busiest month is July and the quietest is December. September sits at about 1.1× the park's average, or 10% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025). Updated 2026-06-20.