Joshua Tree National Park weather in August
August in Joshua Tree National Park: sweltering, dry, with clean air — one of the weakest months to visit.
#11 of 12 months in Joshua Tree National Park · #583 of 604 destinations to visit in August · comfort 37/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Joshua Tree National Park climate normals — August
| Daytime high | 38°C / 101°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 78°F | |
| Feels like (high) | 37°C / 99°F | |
| Rainfall | 16 mm / 0.6 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 38% | 🌵 dry |
| Dew point | 12°C / 54°F | |
| Sunshine | 12.2 h/day | |
| Daylight | 13.4 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Joshua Tree National Park in August — FAQ
- Is August a good time to visit Joshua Tree National Park?
- August in Joshua Tree National Park: sweltering, dry, with clean air — one of the weakest months to visit. It ranks #11 of 12 months for Joshua Tree National Park on SeasonMap's comfort score (37/100).
- What is the weather like in Joshua Tree National Park in August?
- In August, Joshua Tree National Park averages a daily high of 38.2°C and a low of 25.3°C, with about 16.3 mm of rain over roughly 1.6 rainy days.
- What is the air quality in Joshua Tree National Park in August?
- Joshua Tree National Park has a mean US Air Quality Index of about 47 in August.