Weather in Crissy Field Beach, San Francisco, United States in September

So you're interested in going to Crissy Field Beach, San Francisco, United States in September

September is a warm and extremely dry time for sunbathing in Crissy Field Beach. September is a little too cold to enjoy swimming in Crissy Field Beach for any length of time. Consider visiting Crissy Field Beach in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for September.

Temperature in Crissy Field Beach in September

The average maximum temperature in Crissy Field Beach in September is 23°. The average maximum temperature is 22° in the previous month and 22° in the next month.

The average temperature in Crissy Field Beach in September is 18°. The average temperature ranges is 18° in the previous month and 16° in the next month.

The average minimum temperature in Crissy Field Beach in September is 13°. The minimum temperature is 14° in the previous month and 11° in the next month.

Sunshine in Crissy Field Beach in September

The average day light hours per day in Crissy Field Beach 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 Crissy Field Beach in September is typically 7.6 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 Crissy Field Beach in September

The average sea water temperature in Crissy Field Beach in September is 19.7° which is comfortable for swimming though some may prefer warmer water.

Rainfall in Crissy Field Beach in September

The average total rainfall in Crissy Field Beach in September is 3.6cm and on average there are 2 rainy days in September making it an extremely dry time to visit the beach.

Humidity in Crissy Field Beach in September

The maximum dew point (an indicator of humidity) in Crissy Field Beach in September is 14° which is comfortable for everyone. The dew point is 14° in the previous month and 13° in the next month.

The average maximum relative humidity in Crissy Field Beach in September is typically 90.1%. The maximum relative humidity is 90.7% in the previous month and 88.5% in the next month.

The average relative humidity in Crissy Field Beach in September is typically 72.3%. The average relative humidity is 75.5% in the previous month and 70% in the next month.

Wind Speed in Crissy Field Beach in September

The average maximum wind speed in Crissy Field Beach in September is typically 28kmh. The average maximum wind speed is 29kmh in the previous month and 26kmh in the next month.

The average wind speed in Crissy Field Beach in September is typically 12kmh. The average wind speed is 14kmh in the previous month and 10kmh in the next month.

The average wind direction in Crissy Field Beach in September is from the West-Northwest.

Monthly Averages

Suggested Beaches in September

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