How Crowded Is Greenbelt in September?
Quiet0.8× average month · best-time score 65/100
September is a quiet month at Greenbelt Park, running about 0.8× the park's average month — roughly 6% of the year's visitors come in September. That puts it between the May peak and the January low. Overall our best-time score rates September as "Good" for a visit. You'll get about 12.2 hours of daylight to explore.
Frequently Asked Questions
September is quiet at Greenbelt Park (about 0.8× the average month). Our best-time score rates it "Good". The single best month overall is January.
The busiest month is May and the quietest is January. September sits at about 0.8× the park's average, or 6% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025). Updated 2026-06-20.