Grand Canyon in May: Crowds, Weather & What to Pack

Peak crowds · VisitWhen score 65/100 · #4 of 12 months

May is peak season — expect the year's biggest crowds at Grand Canyon National Park: crowds run 95% of the July peak (506,406 average visits). Weather: highs average 68°F and lows 44°F, with 0.7″ of precipitation and 14.1 hours of daylight. Roads and services are only partly open this month — see the access note below. Computed from NPS and NOAA data.

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Partial access: The North Rim is closed to vehicles roughly December–mid-May; the South Rim is open year-round. Current NPS conditions →

At Sunset, swirling rain clouds above a vast canyon filled with colorful peaks and cliff walls. — Grand Canyon National Park — photo: NPS/M. Quinn (public-domain NPS media)

Crowds in May

Grand Canyon averages 506,406 recreation visits in May — 95% of what July, the peak month, draws. That crowd level sets the tone for parking, permits and lodging — book early and start days at dawn.

Average visits (May)

506,406 (mean 2021–2025, NPS)

Share of the year

10.8% of annual visitation

vs. peak (July)

95%

Weather & daylight

Days are pleasant (highs average 68°F), and mornings are chilly (lows average 44°F). It is typically dry (0.7″ of precipitation). Mid-month daylight runs 14.1 hours.

NOAA 1991–2020 monthly normals, station GRAND CANYON VISITOR CTR, AZ US (1 mi from park coordinates, 7,083 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of May.

What to pack for Grand Canyon in May

Computed from the month's weather normals above — not a generic list.

Warm mid-layer (fleece or light puffy) — mornings average 44°F
Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month

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Want quieter or kinder conditions? The computed best months for Grand Canyon are February and April.

Also at their best in May

Other parks whose computed May verdict is a best window — same NPS × NOAA formula:

Lake Clark in May — 7% of peak crowds, highs 59°F, score 96/100
North Cascades in May — 11% of peak crowds, highs 69°F, score 96/100
Katmai in May — 1% of peak crowds, highs 52°F, score 95/100
Gates of the Arctic in May — 12% of peak crowds, highs 56°F, score 94/100

Common questions

Is Grand Canyon crowded in May?

Yes — May runs 95% of Grand Canyon's peak, averaging 506,406 recreation visits (NPS, 2021–2025).

What is the weather like in Grand Canyon in May?

Average highs of 68°F, lows of 44°F, 0.7″ of precipitation (NOAA 1991–2020 normals, GRAND CANYON VISITOR CTR, AZ US station).

What should I pack for Grand Canyon in May?

Warm mid-layer (fleece or light puffy); Sturdy broken-in footwear, navigation and a basic first-aid kit — the full weather-computed list is on this page.

Is everything open at Grand Canyon in May?

The North Rim is closed to vehicles roughly December–mid-May; the South Rim is open year-round. Always check the park's live NPS alerts for current conditions.

See also: the best national parks to visit in May · Last verified 2026-09-24