Weather in California, United States in September

So you're interested in going to California, United States in September

September is a warm and extremely dry time for sunbathing in California. September is a good month for swimming in California with warm sea temperatures. Consider visiting California in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for September.

Temperature in California in September

The average maximum temperature in California in September is 24°. The average maximum temperature is 24° in the previous month and 23° in the next month.

The average temperature in California in September is 19°. The average temperature ranges is 20° in the previous month and 17° in the next month.

The average minimum temperature in California in September is 14°. The minimum temperature is 15° in the previous month and 12° in the next month.

Sunshine in California in September

The average day light hours per day in California in September are 12.4 and there are 9.1 hours of sunshine per day on average during September making it a sunny month with few clouds.

The ultraviolet index in California in September is typically 8.4 during September. An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in California in September

The average sea water temperature in California in September is 22.6° which is warm and pleasant for relaxing and swimming for long periods.

Rainfall in California in September

The average total rainfall in California in September is 1.5cm and on average there are 1.8 rainy days in September making it an extremely dry time to visit the beach.

Humidity in California in September

The maximum dew point (an indicator of humidity) in California in September is 15° which is comfortable for everyone. The dew point is 15° in the previous month and 13° in the next month.

The average maximum relative humidity in California in September is typically 88.9%. The maximum relative humidity is 89.7% in the previous month and 87.4% in the next month.

The average relative humidity in California in September is typically 72.1%. The average relative humidity is 74.3% in the previous month and 69.4% in the next month.

Wind Speed in California in September

The average maximum wind speed in California in September is typically 23kmh. The average maximum wind speed is 24kmh in the previous month and 23kmh in the next month.

The average wind speed in California in September is typically 9kmh. The average wind speed is 9kmh in the previous month and 8kmh in the next month.

The average wind direction in California in September is from the West.

Monthly Averages

Suggested Beaches in September

Book Accomodation Deals