San Diego
California, USA
Long term weather forecast
Long term weather forecast

March weather forecast and Climate
San Diego, CA

  • Average high temperature in March: 65.6°F

Warmest month (with highest average high temperature) is August (76.4°F).
Month with lowest average high temperature is December (64.7°F).

  • Average low temperature in March: 53.2°F

Month with highest average low temperature is August (66.7°F).
Coldest month (with lowest average low temperature) is December (48.4°F).

  • Average humidity in March: 67.3%

Month with highest relative humidity is July (74.6%).
Month with lowest relative humidity is January (63.1%).

  • Average rainfall in March: 2"

Wettest month (with highest rainfall) is January (2.1").
Driest month (with lowest rainfall) is July (0").

  • Average rainfall days in March: 6.5 days

Month with highest number of rainy days is February (7.1 days).
Month with lowest number of rainy days is August (0.4 days).

  • Average sea temperature in March: 59°F

Best months for swimming (with highest average sea temperature) are August and September (68°F).
Coldest months (with lowest average sea temperature) are January, February, March and April (59°F).

  • Average daylight in March: 12h

Months with longest days are May, June and July (Average daylight: 14).
Months with shortest days are January, November and December (Average daylight: 10).

  • Average sunshine in March: 8.4h

Month with most sunshine is July (Average sunshine: 9.8).
Month with least sunshine is December (Average sunshine: 7.5).

  • Average UV index in March: 6

Months with highest UV index are June, July and August (UV index 10).
Months with lowest UV index are January and December (UV index 3).