ClimateForecastMayJune >>

Climate in San Diego (California), United States of America

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Forecast for San Diego (CA)

Wed   May 29
18°C | 14°C
SW 14 km/h
partly cloudy and no rain

partly cloudy and no rain

Thu   May 30
20°C | 14°C
SW 14 km/h
almost clear and no rain

almost clear and no rain

Fri   May 31
20°C | 15°C
SW 14 km/h
almost clear and no rain

almost clear and no rain

The best time of year to visit San Diego in the United States of America

San Diego is a year-round destination with a semi arid and Mediterranean climate. The climate in San Diego often varies significantly over short geographical distances, resulting in different microclimates. In general you will experience warm, dry summers and mild winters. Most rain is seen between November and March.

Snow and ice are rare in wintertime. The record low temperature was -4°C. San Diego has on average around 145 sunny days and 115 cloudy days a year. There are an average of 40 days with measurable precipitation.

The best time to visit California and San Diego largely depends on what your destination is and exactly which places you want to visit within the state. For the coastal areas, different travel advice applies than for the Sierra Nevada mountain area or the Death Valley National Park. If you want to take a tour of California visiting all three areas, May, June and September are the best months.

During the months of March, April, May, June, July, August, September, October and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • When is summer in San Diego?
    The hottest season / summer takes place in July, August, September and October.
  • Which is the warmest month in San Diego?
    September has an average maximum temperature of 26°C and is the warmest month of the year.
  • Which is the coldest month in San Diego?
    The coldest month is January with an average maximum temperature of 19°C.
  • Which is the wettest month in San Diego?
    December tops the wettest month list with 59 mm of rainfall.
  • Which is the driest month in San Diego?
    June is the driest month with 0 mm of precipitation.
  • Which is the sunniest month in San Diego?
    July is the sunniest month with an average of 304 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.