How Crowded Is Great Sand Dunes National Park & Preserve in March?

March runs about 0.5× Great Sand Dunes National Park & Preserve's average month, which makes it a very quiet month here — roughly 4% of the park's yearly visitors come in March.

In a typical March the park sees about 19,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes March the 8th-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 March rates 40/100 ("Poor"), versus the top-rated September at 59/100 — best overall balance of crowds, weather and daylight.

Typical March weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 49°F and an overnight low around 24°F, with about 0.9" of precipitation and roughly 9" of snow.

That average of about 36°F is cool, so layers and a shorter daylight window matter.

Because June, July and August together draw about 53% of annual visitors, choosing March instead steps outside that summer crush — the single biggest lever on how crowded the park feels.

You'll have about 11.7 hours of daylight in March 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 March visit is likely to feel busier than it did a few years ago.