Great Sand Dunes National Park in May
In May, Great Sand Dunes National Park averages a high of 66°F and a low of 38°F, with 1.2 inches of precipitation (rain plus melted snow) and 1.7 inches of snowfall. About 67,000 people visit, the 3rd busiest of 12 (busy). Days are 14 hours 11 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 66° / 38°F
- Precipitation
- 1.2in
- Snow
- 1.7in
- Daylight
- 14h 11m
- Visitors
- 67,000
- 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 May
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Black Canyon of the Gunnison National Park | 66° / 38° | Busy | Mild |
| Mesa Verde National Park | 69° / 43° | Busy | Mild |
| Rocky Mountain National Park | 59° / 28° | Moderate | Mild, wet |
| Arches National Park | 80° / 53° | Very busy | Hot |
| Canyonlands National Park | 77° / 46° | Very busy | Mild, wet |
Closures, reservations and alerts: Great Sand Dunes National Park on nps.gov
All twelve months at Great Sand Dunes · National parks to visit in May