Fallbrook Weather in August

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

The climate in Fallbrook during August can be summarized as hot and very dry.

August is in the summer in Fallbrook and is typically the warmest month of the year. Daytime maximum temperatures average around a comfortable 30°C (86°F), whilst at night 17°C (63°F) is normal.

Fallbrook weather averages (imperial / metric)
Daytime temperature 29.7°C 85.5°F
Nightly temperature 17.3°C 63.1°F
Average temperature 23.5°C 74.3°F
Daily sunshine 11.1 hrs
Avg rainfall 4 mm 0.1 ins
Rainy days 1 days
Sea temperature 20.5°C 69°F
Humidity 67%
Windspeed 13.7kph 9 mph

On average August is the 3rd driest month of the year in Fallbrook with around 4mm 0.1 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 11.1 hours of sunshine per day.

August temperatures in Fallbrook

Fallbrook average temperature in August

August rainfall

Fallbrook average rain in August

August hourly sunshine

Fallbrook 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 Fallbrook 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

Fallbrook weather stats

Fallbrook weather statistics
Hottest month: August 29.4°C 84.9°F
Driest month: July 2mm 0.1ins
Sunniest month: August 11.1hrs
Coldest month: January 17.7°C 63.9°F
Wettest month: January 70mm 2.8ins
Map showing location of Fallbrook (33.37642, -117.25115) Fallbrook map pin © Google

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