How Crowded Is Guadalupe Mountains in September?
September is a quiet month at Guadalupe Mountains National Park, running about 0.7× the park's average month — roughly 6% of the year's visitors come in September. That puts it between the March peak and the January low. Overall our best-time score rates September as "Excellent" for a visit. Typical September weather averages a high near 80°F and a low around 58°F, with about 2.3" of precipitation. You'll get about 12.2 hours of daylight to explore.
Frequently Asked Questions
September is quiet at Guadalupe Mountains National Park (about 0.7× the average month). Our best-time score rates it "Excellent". The single best month overall is August.
The busiest month is March and the quietest is January. September sits at about 0.7× the park's average, or 6% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.