Great Sand Dunes National Park in August
In August, Great Sand Dunes National Park averages a high of 78°F and a low of 50°F, with 1.9 inches of precipitation (rain plus melted snow). About 63,000 people visit, the 4th busiest of 12 (busy). Days are 13 hours 37 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 78° / 50°F
- Precipitation
- 1.9in
- Snow
- 0in
- Daylight
- 13h 37m
- Visitors
- 63,000
- Crowds
- Busy
Best months for weather and crowds instead: June (very busy) and October (moderate).
Weather 1991–2020 averages at Great Sand Dunes NP & Preserve, CO, 6 miles from the park's center, 8,183 ft. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in August
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Black Canyon of the Gunnison National Park | 81° / 52° | Busy | Hot |
| Mesa Verde National Park | 84° / 57° | Busy | Hot |
| Rocky Mountain National Park | 73° / 38° | Very busy | Mild, wet |
| Arches National Park | 96° / 68° | Busy | Very hot |
| Canyonlands National Park | 92° / 61° | Moderate | Very hot |
Closures, reservations and alerts: Great Sand Dunes National Park on nps.gov
All twelve months at Great Sand Dunes · National parks to visit in August