The best time to visit Great Sand Dunes is generally May, June, July, August and September. It is a national park & preserve in Colorado. It is a certified dark-sky park, prized for stargazing on clear nights.
May, June, July, August and September tend to bring the best balance of weather, access and conditions. Around then, daytime highs average about 82°F and overnight lows near 55°F.
Temperatures are relatively cool all year at the park elevation 8000 ft. Conditions are most often calm, but winds can arise, especially in spring and during storm fronts. Daytime temperatures feel warmer here year round due to intense high-altitude sunlight, and mid-day summer sand surface temps can be 160 degrees F! Plan to explore the dunes morning or evening during summer. Nights are cool in summer, and frigid in winter. Visit https://nps.gov/grsa/planyourvisit/weather.htm for details
Great Sand Dunes is a certified dark-sky park. Skies are typically clearest in August, September, October and November.
See what's in the sky this season
Trailwind finds the moment a trip is unusually possible: the right season, a cheap fare, your open dates, and rare skies. Browse by calendar: