May is a good month at Great Sand Dunes — it ranks 5th of the twelve here. Expect about 24% fewer visitors than June, the park's peak — 71,427 visits on average. Days run around 66°F by afternoon and 38°F at night, with 14.2 hours of daylight.
May against the park's best
| Month | Verdict | Avg. visits | vs. peak | High | Low | Snow | Daylight |
|---|---|---|---|---|---|---|---|
| May (this page) | Good | 71,427 | −24% | 66°F | 38°F | 1.7" | 14.2 h |
| April (best) | Excellent | 26,517 | −72% | 56°F | 29°F | 7.9" | 13.1 h |
| June (peak crowds) | Good | 94,559 | peak | 77°F | 48°F | 0" | 14.8 h |
Weather figures are for the visitor center area (about 8,200 ft) — the Great Sand Dunes NP & Preserve station. Visits are 2021–2025 averages; climate normals cover 1991–2020. Conditions vary across the park; check current status before you go.
Common questions
Is May a good time to visit Great Sand Dunes?
Yes — a solid month, if not the very best. May ranks 5 of 12 at Great Sand Dunes on crowds, weather, daylight, and access together.
How crowded is Great Sand Dunes in May?
About 71,427 recreation visits on average — 24% below June, the park's peak.
How warm is Great Sand Dunes in May?
Average highs around 66°F and lows around 38°F at the Great Sand Dunes NP & Preserve station, with about 2 inches of snow across the month.
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