May in Joshua Tree National Park is a good month: highs around 90°F, lows around 60°F. Crowds: moderate — #4 busiest of the park's 12 months. Getting hot; early-morning starts become necessary, not optional. The editorial best window here is March–April & October.
| Verdict | Good A solid visit with a caveat — usually crowds or heat. |
|---|---|
| Temps °F | 90° high / 60° low |
| Crowds | moderate · #4 busiest of the park's 12 months |
| What May is like | Getting hot; early-morning starts become necessary, not optional |
| Best window (whole year) | March–April & October |
| Peak crowds (whole year) | Mar–Apr |
CROWDS: RELATIVE SEASONALITY FROM NPS VISITATION STATISTICS · TEMPS: APPROXIMATE NOAA NORMALS AT MAIN VISITOR ELEVATION — HIGH COUNTRY RUNS 10–20°F COLDER
Joshua Tree National Park in June — Tough, highs around 100°F, crowds: very quiet (full summer heat — daytime highs regularly top 100°f).
Our verdict for May is "Good". A solid visit with a caveat — usually crowds or heat. Expect highs around 90°F and lows around 60°F, with crowds at the "moderate" level. Temperatures are approximate NOAA normals at the main visitor elevation; crowd levels follow published NPS visitation statistics.
Across the full 12-month review, the best window is March–April & October, and the peak-crowd months are Mar–Apr. May itself we rate "Good".
June we rate "Tough" against "Good" for May, with highs around 100°F and crowds at the "very quiet" level.
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