Great Sand Dunes National Park & Preserve in August
August at Great Sand Dunes National Park & Preserve averages a daytime high near 78°F and an overnight low around 50°F, with about 1.9" of precipitation. Visitation runs about 1.8× the park's average month, which makes August a very busy month here.
- Average low
- 50°F
- Average high
- 78°F
Range across the year: 11°F to 81°F
- Precipitation
- 1.9 in
- Daylight
- 13.5 hours
Roughly 15% of the park's yearly visitors come in August: about 68,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes August the 3rd-busiest of the park's twelve months, sitting between the June peak (2.4×) and the January low (0.1×).
On our Best Time to Visit score August rates 59/100 ("Fair"). Our recommended month is September: the lightest crowds of the park's good-weather months.
The daily average of about 64°F is a comfortable range for hiking and being outdoors all day. These figures are 1991–2020 NOAA climate normals from the nearest station, about 6 miles from the park.
August falls inside the park's busiest stretch: June, July and August together pull about 53% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 13.5 hours of daylight in August to explore — between the 9.4-hour midwinter low and the 14.6-hour summer high.
Park-wide, 2025 drew 432,498 recreation visits, down 1.2% from 437,661 in 2024.
Across the past decade overall visitation has risen about 15.5%, so a August visit is likely to feel busier than it did a few years ago.
How August compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| July | 81°F / 52°F | 2.3× Very busy | 54 Fair |
| August | 78°F / 50°F | 1.8× Very busy | 59 Fair |
| September | 72°F / 44°F | 1.3× Busy | 60 Good |
All twelve months at Great Sand Dunes, with the best time to visit.
Things to do at Great Sand Dunes in August
The National Park Service tags 7 Great Sand Dunes activities for summer. Each links to the park's own page for it.
- Hike Medano Lake and Mount Herard · 8-12 hours
- Hike Sand Creek Lakes · 10-15 hours
- 4WD Medano Pass Primitive Road · 1-3 hours
- Experience the Night · 30-300 minutes
- Explore the Dunes
- Hike Montville Nature Trail or Mosca Pass Trail · 30-240 minutes
- Sandboarding and Sand Sledding · 2-8 hours
Frequently Asked Questions
August averages a daytime high near 78°F and an overnight low around 50°F at Great Sand Dunes National Park & Preserve, with about 1.9 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 6 miles from the park, so conditions inside the park can differ, especially at other elevations.
August is very busy at Great Sand Dunes National Park & Preserve (about 1.8× the average month). Our best-time score rates it "Fair" at 59/100. Our recommended month is September.
The busiest month is June and the quietest is January. August sits at about 1.8× the park's average, or 15% of annual visitation.
A typical August sees about 68,000 recreation visits at Great Sand Dunes National Park & Preserve, based on National Park Service monthly counts from 1979–2025.
Where to stay near Great Sand Dunes in August
Booking a August trip to Great Sand Dunes National Park & Preserve? Compare hotels, cabins and vacation rentals near the park with live August availability and prices.
Top-rated places to stay near Great Sand Dunes
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See the full ranking of the best national parks to visit in August.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.