Mammoth Lakes Weather in August

What's the weather like in Mammoth Lakes (California) in August 2025?

The climate in Mammoth Lakes during August can be summarized as mild and dry.

August is in the summer in Mammoth Lakes and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 24°C (74°F), whilst at night 6°C (43°F) is normal.

Mammoth Lakes weather averages (imperial / metric)
Daytime temperature 23.5°C 74.2°F
Nightly temperature 6°C 42.7°F
Average temperature 14.7°C 58.5°F
Daily sunshine 11.9 hrs
Avg rainfall 21 mm 0.8 ins
Rainy days 5 days
Sea temperature 16.7°C 62.1°F
Humidity 47%
Windspeed 14kph 9 mph

On average August is the 2nd driest month of the year in Mammoth Lakes with around 21mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 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 Mammoth Lakes

Mammoth Lakes average temperature in August

August rainfall

Mammoth Lakes average rain in August

August hourly sunshine

Mammoth Lakes average rain in August

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 Mammoth Lakes 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

Mammoth Lakes weather stats

Mammoth Lakes weather statistics
Hottest month: July 23.6°C 74.5°F
Driest month: September 20mm 0.8ins
Sunniest month: July 12.8hrs
Coldest month: January 3.7°C 38.7°F
Wettest month: January 125mm 4.9ins
Map showing location of Mammoth Lakes (37.64855, -118.97208) Mammoth Lakes map pin © Google

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