How Crowded Is Saint Croix in August?
August is a very busy month at Saint Croix National Scenic Riverway, running about 2.5× the park's average month — roughly 21% of the year's visitors come in August. That puts it between the July peak and the December low. Overall our best-time score rates August as "Fair" for a visit. Typical August weather averages a high near 79°F and a low around 58°F, with about 4.3" of precipitation. You'll get about 13.9 hours of daylight to explore.
Frequently Asked Questions
August is very busy at Saint Croix National Scenic Riverway (about 2.5× the average month). Our best-time score rates it "Fair". The single best month overall is June.
The busiest month is July and the quietest is December. 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.