How Crowded Is Acadia in August?
August is a very busy month at Acadia National Park, running about 2.5× the park's average month — roughly 21% of the year's visitors come in August. It is in fact the busiest month of the year here, so expect full parking lots, busy trails and booked-out campgrounds. If crowds bother you, February (the quietest month) or the recommended May are easier. Typical August weather averages a high near 78°F and a low around 60°F, with about 3.5" of precipitation. You'll get about 13.9 hours of daylight to explore.
Frequently Asked Questions
August is very busy at Acadia National Park (about 2.5× the average month). Our best-time score rates it "Fair". The single best month overall is May.
The busiest month is August and the quietest is February. August sits at about 2.5× the park's average, or 21% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.