How Crowded Is Katahdin Woods and Waters in September?
September is a busy month at Katahdin Woods and Waters National Monument, running about 1.3× the park's average month — roughly 11% of the year's visitors come in September. That puts it between the February peak and the April low. Overall our best-time score rates September as "Good" for a visit. Typical September weather averages a high near 67°F and a low around 45°F. You'll get about 12.3 hours of daylight to explore.
Frequently Asked Questions
September is busy at Katahdin Woods and Waters National Monument (about 1.3× the average month). Our best-time score rates it "Good". The single best month overall is June.
The busiest month is February and the quietest is April. September sits at about 1.3× the park's average, or 11% of annual visitation.
Source: National Park Service Visitor Use Statistics (2020–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.