Joshua Tree Weather in August

What's the weather like in Joshua Tree (California) in August 2025?

The climate in Joshua Tree during August can be summarized as hot and dry.

August is in the summer in Joshua Tree and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a warm 35°C (95°F), whilst at night 18°C (64°F) is normal.

Joshua Tree weather averages (imperial / metric)
Daytime temperature	35.1°C 95.1°F
Nightly temperature	18°C 64.3°F
Average temperature	26.5°C 79.7°F
Daily sunshine	11.9 hrs
Avg rainfall	23 mm 0.9 ins
Rainy days	2 days
Sea temperature	19.4°C 67°F
Humidity	52%
Windspeed	14.8kph 9 mph

On average August is the 6th driest month of the year in Joshua Tree with around 23mm 0.9 inches of rain making it a dry time to visit. This rainfall is typically spread over 2 days, although this may vary considerably.

On the flip side this corresponds to an average of 11.9 hours of sunshine per day.

August temperatures in Joshua Tree

Joshua Tree average temperature in August

August rainfall

August hourly sunshine

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Joshua Tree in August 2025.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Joshua Tree weather stats

Joshua Tree weather statistics
Hottest month:	July	35.7°C 96.3°F
Driest month:	June	5mm 0.2ins
Sunniest month:	August	11.9hrs
Coldest month:	January	13.7°C 56.7°F
Wettest month:	January	57mm 2.2ins

Map showing location of Joshua Tree (34.13473, -116.31307)