How Crowded Is Glen Canyon National Recreation Area in May?
May runs about 1.3× Glen Canyon National Recreation Area's average month, which makes it a busy month here — roughly 11% of the park's yearly visitors come in May.
In a typical May the park sees about 408,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.
That makes May the 4th-busiest of the park's twelve months, sitting between the July peak (2×) and the January low (0.3×).
On our Best Time to Visit score May rates 71/100 ("Good"), versus the top-rated October at 63/100 — pleasant weather with noticeably thinner crowds (shoulder season).
Typical May weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 81°F and an overnight low around 54°F, with about 0.4" of precipitation.
That average of about 67°F is a comfortable range for hiking and being outdoors all day.
Because June, July and August together draw about 45% 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 14 hours of daylight in May to explore — between the 9.5-hour midwinter low and the 14.5-hour summer high.
Park-wide, 2025 drew 3,729,502 recreation visits, down 21.1% from 4,725,610 in 2024.
Frequently Asked Questions
May is busy at Glen Canyon National Recreation Area (about 1.3× the average month). Our best-time score rates it "Good". The single best month overall is October.
The busiest month is July and the quietest is January. May sits at about 1.3× the park's average, or 11% of annual visitation.
A typical May sees about 408,000 recreation visits at Glen Canyon National Recreation Area, based on National Park Service monthly counts from 1979–2025.
Where to stay near Glen Canyon in May
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Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-07-14.