How Crowded Is Thaddeus Kosciuszko in August?
August is a very busy month at Thaddeus Kosciuszko National Memorial, running about 1.7× the park's average month — roughly 14% of the year's visitors come in August. That puts it between the July peak and the January low. Overall our best-time score rates August as "Poor" for a visit. Typical August weather averages a high near 87°F and a low around 70°F, with about 5" of precipitation. You'll get about 13.6 hours of daylight to explore.
Frequently Asked Questions
August is very busy at Thaddeus Kosciuszko National Memorial (about 1.7× the average month). Our best-time score rates it "Poor". The single best month overall is October.
The busiest month is July and the quietest is January. August sits at about 1.7× the park's average, or 14% of annual visitation.
Source: National Park Service Visitor Use Statistics (1981–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.