How Crowded Is Great Sand Dunes in December?
December is a very quiet month at Great Sand Dunes National Park & Preserve, running about 0.2× the park's average month — roughly 1% of the year's visitors come in December. That puts it between the June peak and the January low. Overall our best-time score rates December as "Poor" for a visit. Typical December weather averages a high near 34°F and a low around 12°F, with about 0.5" of precipitation and roughly 7" of snow. You'll get about 9.4 hours of daylight to explore.
Frequently Asked Questions
December is very quiet at Great Sand Dunes National Park & Preserve (about 0.2× the average month). Our best-time score rates it "Poor". The single best month overall is September.
The busiest month is June and the quietest is January. December sits at about 0.2× the park's average, or 1% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.