Joshua Tree in May: Crowds, Weather & What to Pack
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May is one of the best months of the year to visit Joshua Tree National Park: crowds run 62% of the March peak (253,671 average visits). Weather: highs average 89°F and lows 58°F, with 0.1″ of precipitation and 13.9 hours of daylight. Computed from NPS and NOAA data.
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Bring for Joshua Tree 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 58°F and high of 89°F.
- Sun protection and 2L+ water per personSee it on AmazonWhy: highs average 89°F.
- Sturdy, broken-in hiking bootsSee it on AmazonWhy: every park, every month.
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Joshua Tree in May: what the park service says
May is the tail of Joshua Tree's spring busy season, which the park service puts from mid-February to mid-May, when first-come sites fill most weeknights. Weekends stay busy until the end of May, and the park still recommends reserving for any weekend or holiday. Belle and White Tank close temporarily in summer, and the park says Ryan, which has the horse camp, is closed in the summer months.
Source: NPS, checked 2026-11-05.
Crowds in May
Joshua Tree averages 253,671 recreation visits in May — 62% of what March, the peak month, draws. Trailheads and parking fill accordingly.
Weather & daylight
Days run warm (highs average 89°F), and nights stay mild (lows average 58°F). It is typically dry (0.1″ of precipitation). Mid-month daylight runs 13.9 hours.
NOAA 1991–2020 monthly normals, station CHIRIACO SUMMIT, CA US (18 mi from park coordinates, 1,706 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of May.
What to pack for Joshua Tree 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 58°F and high of 89°F
- Sun protection and 2L+ water per person — highs average 89°F
- Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month
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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 Joshua Tree crowded in May?
Moderately: May runs 62% of the March peak, averaging 253,671 visits (NPS, 2021–2025). See every month at Joshua Tree.
What is the weather like in Joshua Tree in May?
Average highs of 89°F, lows of 58°F, 0.1″ of precipitation (NOAA 1991–2020 normals, CHIRIACO SUMMIT, CA US station). Compare it with other national parks in May.
What should I pack for Joshua Tree 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. Going in June instead? Joshua Tree in June has its own list.
See also: the best national parks to visit in May · Last verified 2026-09-24