Zion in May: Crowds, Weather & What to Pack
Peak crowds · VisitWhen score 61/100 · #8 of 12 months
May is peak season — expect the year's biggest crowds at Zion National Park: crowds run 94% of the June peak (568,508 average visits). Weather: highs average 84°F and lows 53°F, with 0.8″ of precipitation and 14.1 hours of daylight. Computed from NPS and NOAA data.
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Bring for Zion in May
- A light layer you can shed by midday (long sleeve or windbreaker)See it on AmazonWhy: a 31°F swing between the average low of 53°F and high of 84°F.
- Sun protection and 2L+ water per personSee it on AmazonWhy: highs average 84°F.
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Crowds in May
Zion averages 568,508 recreation visits in May — 94% of what June, the peak month, draws. Plan lodging and entries with that in mind — book early and start days at dawn.
Weather & daylight
Expect warm days (highs average 84°F), and nights stay mild (lows average 53°F). It is typically dry (0.8″ of precipitation). Mid-month daylight runs 14.1 hours.
NOAA 1991–2020 monthly normals, station ZION NP, UT US (1 mi from park coordinates, 4,038 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of May.
What to pack for Zion in May
Computed from the month's weather normals above — not a generic list.
- A light layer you can shed by midday (long sleeve or windbreaker) — a 31°F swing between the average low of 53°F and high of 84°F
- Sun protection and 2L+ water per person — highs average 84°F
- Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month
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Looking for a better window? The computed best months for Zion are January and February.
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 Zion crowded in May?
Yes — May runs 94% of Zion's peak, averaging 568,508 recreation visits (NPS, 2021–2025).
What is the weather like in Zion in May?
Average highs of 84°F, lows of 53°F, 0.8″ of precipitation (NOAA 1991–2020 normals, ZION NP, UT US station).
What should I pack for Zion in May?
A light layer you can shed by midday (long sleeve or windbreaker); Sun protection and 2L+ water per person; Sturdy broken-in footwear, navigation and a basic first-aid kit — the full weather-computed list is on this page.
See also: the best national parks to visit in May · Last verified 2026-09-24