Weather in San Diego County, United States in May

So you're interested in going to San Diego County, United States in May

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

Temperature in San Diego County in May

The average maximum temperature in San Diego County in May is 22°. The average maximum temperature is 20° in the previous month and 22° in the next month.

The average temperature in San Diego County in May is 17°. The average temperature ranges is 15° in the previous month and 19° in the next month.

The average minimum temperature in San Diego County in May is 14°. The minimum temperature is 11° in the previous month and 15° in the next month.

Sunshine in San Diego County in May

The average day light hours per day in San Diego County in May are 13.9 and there are 8.7 hours of sunshine per day on average during May making it a sunny month with few clouds.

The ultraviolet index in San Diego County in May is typically 11 during May. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. 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 San Diego County in May

The average sea water temperature in San Diego County in May is 22.7° which is warm and pleasant for relaxing and swimming for long periods.

Rainfall in San Diego County in May

The average total rainfall in San Diego County in May is 1.5cm and on average there are 3.2 rainy days in May making it a very dry time to visit the beach.

Humidity in San Diego County in May

The maximum dew point (an indicator of humidity) in San Diego County in May is 13° which is very comfortable. The dew point is 11° in the previous month and 15° in the next month.

The average maximum relative humidity in San Diego County in May is typically 85%. The maximum relative humidity is 86.8% in the previous month and 87% in the next month.

The average relative humidity in San Diego County in May is typically 70.4%. The average relative humidity is 69.5% in the previous month and 74.4% in the next month.

Wind Speed in San Diego County in May

The average maximum wind speed in San Diego County in May is typically 20kmh. The average maximum wind speed is 21kmh in the previous month and 19kmh in the next month.

The average wind speed in San Diego County in May is typically 8kmh. The average wind speed is 8kmh in the previous month and 7kmh in the next month.

The average wind direction in San Diego County in May is from the West-Southwest.

Monthly Averages

Suggested Beaches in May

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