Weather by month
San Diego
California
The mildest year in America, with a gray-morning habit in early summer and a short, tidy rainy season in winter.
The best time to come
September and October are the ones locals guard: warmest ocean, clearest mornings, and the marine layer finally gone. November keeps the sunshine and loses the crowds — and if you come in spring, know that the mornings are often gray until lunch.
The year at a glance
| Month | Highs / lows | Temperature range | Wet days | Water |
|---|---|---|---|---|
| January | 66° / 50° | 4 | 58° | |
| February | 66° / 52° | 4 | 58° | |
| March | 67° / 55° | 3 | 59° | |
| April | 69° / 57° | 2 | 60° | |
| May | 70° / 60° | 1 | 64° | |
| June | 72° / 63° | 0 | 65° | |
| July | 75° / 66° | 0 | 67° | |
| August | 77° / 68° | 0 | 68° | |
| September ● | 77° / 66° | 0 | 67° | |
| October ● | 75° / 62° | 1 | 65° | |
| November ● | 71° / 55° | 2 | 62° | |
| December | 66° / 50° | 3 | 60° |
San Diego facts
- Sits at about 20 ft above sea level.
- 9.8 in of rain in a typical year, with February the wettest month.
- August runs hottest (77° afternoons); December nights are the coldest (50°).