Irvine Weather in October

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

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

October is in the fall / autumn in Irvine and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (78°F), whilst at night 12°C (53°F) is normal.

Irvine weather averages (imperial / metric)
Daytime temperature 25.5°C 77.8°F
Nightly temperature 11.8°C 53.2°F
Average temperature 18.6°C 65.5°F
Daily sunshine 8.9 hrs
Avg rainfall 7 mm 0.3 ins
Rainy days 2 days
Sea temperature 19.3°C 66.7°F
Humidity 66%
Windspeed 11.5kph 7 mph

On average October is the 6th driest month of the year in Irvine with around 7mm 0.3 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 8.9 hours of sunshine per day.

October temperatures in Irvine

Irvine average temperature in October

October rainfall

Irvine average rain in October

October hourly sunshine

Irvine 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 Irvine 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

Irvine weather stats

Irvine weather statistics
Hottest month: August 28.8°C 83.8°F
Driest month: July 1mm 0ins
Sunniest month: August 11.5hrs
Coldest month: January 18.6°C 65.5°F
Wettest month: January 75mm 3ins
Map showing location of Irvine (33.66946, -117.82311) Irvine map pin © Google

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