Joshua Tree in August: Crowds, Weather & What to Pack

Shoulder · VisitWhen score 62/100 · #7 of 12 months

August is a solid shoulder-season month to visit Joshua Tree National Park: crowds run 34% of the March peak (140,063 average visits). Weather: highs average 102°F and lows 75°F, with 0.3″ of precipitation and 13.4 hours of daylight. Computed from NPS and NOAA data.

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Crowds in August

Joshua Tree averages 140,063 recreation visits in August — 34% of what March, the peak month, draws — the second-quietest month of the year. Trailheads and parking fill accordingly.

Weather & daylight

Days are seriously hot (highs average 102°F), and even nights stay hot (lows average 75°F). It is typically dry (0.3″ of precipitation). Mid-month daylight runs 13.4 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 August.

What to pack for Joshua Tree in August

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 26°F swing between the average low of 75°F and high of 102°F
• Sun hat, SPF 50+ and 3L+ water capacity — highs average 102°F
• Electrolyte tablets (heat-illness prevention) — at highs of 102°F, water alone is not enough — dehydration is the real risk (compare other options)
• Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month

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If your dates are flexible, consider shifting: The computed best months for Joshua Tree are January and May.

Also at their best in August

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

• Guadalupe Mountains in August — 28% of peak crowds, highs 84°F, score 80/100
• Lassen Volcanic in August — 56% of peak crowds, highs 78°F, score 77/100
• Bryce Canyon in August — 81% of peak crowds, highs 78°F, score 68/100
• Redwood in August — 85% of peak crowds, highs 66°F, score 67/100

Common questions

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