San Diego (CA) Climate by Month
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.
The graphs below provide an overview of the climate in San Diego (California), the United States of America. They present long-term patterns and averages of weather conditions over a 30-year period.
Average day and night temperature
The mean minimum and maximum temperatures over the year.
Monthly hours of sunshine
The average monthly total hours of sunshine over the year
Daily percent of sunshine
The mean percent of hours of sunhours during the day over the year
Monthly precipitation
The mean monthly precipitation over the year, including rain, snow, hail etc.
Monthly rainy days
The average number of days each month with rain, snow, hail etc.
Average humidity
The mean monthly relative humidity over the year
