San Diego Weather in October

What's the weather like in San Diego (California) in October 2025?

The climate in San Diego during October can be summarized as warm and very dry.

October is in the fall / autumn in San Diego and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 24°C (76°F), whilst at night 14°C (57°F) is normal.

San Diego weather averages (imperial / metric)
Daytime temperature 24.4°C 75.9°F
Nightly temperature 14°C 57.2°F
Average temperature 19.2°C 66.6°F
Daily sunshine 8.6 hrs
Avg rainfall 8 mm 0.3 ins
Rainy days 2 days
Sea temperature 19.4°C 67°F
Humidity 69%
Windspeed 12.2kph 8 mph

On average October is the 6th driest month of the year in San Diego with around 8mm 0.3 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 8.6 hours of sunshine per day.

October temperatures in San Diego

San Diego average temperature in October

October rainfall

San Diego average rain in October

October hourly sunshine

San Diego average rain in October

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 San Diego in October 2025.

Other monthly averages

Best places to visit in October

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

San Diego weather stats

San Diego weather statistics
Hottest month: August 26.7°C 80.1°F
Driest month: July 1mm 0ins
Sunniest month: January 8.5hrs
Coldest month: January 18.4°C 65.1°F
Wettest month: January 53mm 2.1ins
Map showing location of San Diego (32.71533, -117.15726) San Diego map pin © Google

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