San Diego Weather
San Diego occupies the land from the Mexican border to Camp Pendleton, south to north; and from the Pacific Ocean to the Laguna Mountains, west to east. San Diego Bay is one of the country's finest natural harbors. The city's cover a large area of vastly different terrain: miles of ocean and bay shoreline, dense forests, fertile valleys, mountains, canyons, and desert. The climate is broken up into four distinct microclimates. The coast where the temperatures are mild and constant; the inland climate zone where temperatures are warmer during the day and fluctuate slightly more than the coast; the mountains with seasonal snow; and the desert areas where the temperature can fluctuate as much as 30 degrees in one day. San Diego is about 120 miles south of Los Angeles.
The climate in San Diego is moderated by the jetstream coming in from the Pacific Ocean, making for comfortable summers that don't get too warm and the winters that don't get too cool. Severe weather is rare; snow is limited to once or twice a year in the mountains and the city averages only three thunderstorms a year. September and October often bring hot eastern winds from the desert, producing “Santa Ana” conditions that make for the hottest days of the year.
To view weather information in other communities in San Diego County click here
San Diego Temperatures
San Diego Precipitation
San Diego Weather Facts
- On average, the warmest month is August.
- The highest recorded temperature was 111° F in 1963.
- The average coolest month is December.
- The lowest recorded temperature was 29° F in 1949.
- The maximum average precipitation occurs in January.