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Climate & Weather Averages in San Clemente Island, California, USA

Currently: 81 °F. Clear. (Weather station: Catalina Airport, USA). See more current weather

Annual Weather Averages in Catalina Airport

Catalina Airport is 35 miles from San Clemente Island, so the actual climate in San Clemente Island can vary a bit.

Based on weather reports collected during 1985–2015.

All Year Climate & Weather Averages in San Clemente Island

High Temp: 77 °F

Low Temp: 49 °F

Mean Temp: 62 °F

Precipitation: 0.13"

Humidity: 64%

Dew Point: 49 °F

Wind: 6 mph

Pressure: 29.98 "Hg

Visibility: 9 mi

January Climate & Weather Averages in San Clemente Island

High Temp: 63 °F

Low Temp: 50 °F

Mean Temp: 56 °F

Precipitation: 0.26"

Humidity: 57%

Dew Point: 40 °F

Wind: 5 mph

Pressure: 30.09 "Hg

Visibility: 9 mi

February Climate & Weather Averages in San Clemente Island

High Temp: 62 °F

Low Temp: 49 °F

Mean Temp: 56 °F

Precipitation: 0.50"

Humidity: 64%

Dew Point: 43 °F

Wind: 7 mph

Pressure: 30.06 "Hg

Visibility: 10 mi

March Climate & Weather Averages in San Clemente Island

High Temp: 64 °F

Low Temp: 51 °F

Mean Temp: 57 °F

Precipitation: 0.13"

Humidity: 66%

Dew Point: 45 °F

Wind: 7 mph

Pressure: 30.03 "Hg

Visibility: 9 mi

April Climate & Weather Averages in San Clemente Island

High Temp: 66 °F

Low Temp: 52 °F

Mean Temp: 59 °F

Precipitation: 0.07"

Humidity: 65%

Dew Point: 47 °F

Wind: 8 mph

Pressure: 29.99 "Hg

Visibility: 9 mi

May Climate & Weather Averages in San Clemente Island

High Temp: 68 °F

Low Temp: 55 °F

Mean Temp: 62 °F

Precipitation: 0.03"

Humidity: 69%

Dew Point: 51 °F

Wind: 7 mph

Pressure: 29.95 "Hg

Visibility: 8 mi

June Climate & Weather Averages in San Clemente Island

High Temp: 71 °F

Low Temp: 58 °F

Mean Temp: 64 °F

Precipitation: 0.03"

Humidity: 70%

Dew Point: 55 °F

Wind: 7 mph

Pressure: 29.91 "Hg

Visibility: 7 mi

July Climate & Weather Averages in San Clemente Island

High Temp: 76 °F

Low Temp: 61 °F

Mean Temp: 69 °F

Precipitation: 0.01"

Humidity: 68%

Dew Point: 57 °F

Wind: 6 mph

Pressure: 29.92 "Hg

Visibility: 8 mi

August Climate & Weather Averages in San Clemente Island

High Temp: 77 °F

Low Temp: 63 °F

Mean Temp: 70 °F

Precipitation: 0.01"

Humidity: 65%

Dew Point: 57 °F

Wind: 7 mph

Pressure: 29.90 "Hg

Visibility: 8 mi

September Climate & Weather Averages in San Clemente Island

High Temp: 77 °F

Low Temp: 62 °F

Mean Temp: 69 °F

Precipitation: 0.01"

Humidity: 62%

Dew Point: 55 °F

Wind: 6 mph

Pressure: 29.88 "Hg

Visibility: 8 mi

October Climate & Weather Averages in San Clemente Island

High Temp: 72 °F

Low Temp: 58 °F

Mean Temp: 65 °F

Precipitation: 0.06"

Humidity: 63%

Dew Point: 51 °F

Wind: 6 mph

Pressure: 29.95 "Hg

Visibility: 8 mi

November Climate & Weather Averages in San Clemente Island

High Temp: 68 °F

Low Temp: 53 °F

Mean Temp: 60 °F

Precipitation: 0.10"

Humidity: 57%

Dew Point: 43 °F

Wind: 5 mph

Pressure: 30.04 "Hg

Visibility: 9 mi

December Climate & Weather Averages in San Clemente Island

High Temp: 62 °F

Low Temp: 49 °F

Mean Temp: 56 °F

Precipitation: 0.35"

Humidity: 57%

Dew Point: 39 °F

Wind: 5 mph

Pressure: 30.09 "Hg

Visibility: 10 mi

Quick Climate Info

Hottest MonthAugust (70 °F avg)
Coldest MonthDecember (56 °F avg)
Wettest MonthFebruary (0.50" avg)
Windiest MonthApril (8 mph avg)
Annual precip.1.55" (per year)

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