How Crowded Is Valles Caldera National Preserve in May?

May runs about 1.1× Valles Caldera National Preserve's average month, which makes it an average month here — roughly 9% of the park's yearly visitors come in May.

In a typical May the park sees roughly 6,300 recreation visits, based on National Park Service monthly counts from 2020 to 2025.

That makes May the 6th-busiest of the park's twelve months, sitting between the September peak (1.7×) and the February low (0.4×).

On our Best Time to Visit score May rates 49/100 ("Fair"), versus the top-rated June at 54/100 — best overall balance of crowds, weather and daylight.

Typical May weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 62°F and an overnight low around 32°F, with about 1.4" of precipitation.

That average of about 47°F is cool, so layers and a shorter daylight window matter.

Because June, July and August together draw about 35% of annual visitors, choosing May instead steps outside that summer crush — the single biggest lever on how crowded the park feels.

You'll have about 13.9 hours of daylight in May to explore — between the 9.6-hour midwinter low and the 14.4-hour summer high.

Park-wide, 2025 drew 84,952 recreation visits, up 3.5% from 82,111 in 2024.

Across the past decade overall visitation has risen about 152%, so a May visit is likely to feel busier than it did a few years ago.