Weather in San Diego
Live weather and 7-day forecast for San Diego, United States, followed by what to expect in each month of the year.
Sunrise 06:59 Sunset 18:09 Daylight 11h 10m Sun times →
Next 24 hours
7-day forecast
Forecast data from Open-Meteo
Climate in San Diego: month by month
Averaged over 2023–2025, the warmest month in San Diego is August, with highs around 25 °C (78 °F) and lows around 18 °C (65 °F); the coolest is January, with highs around 17 °C (63 °F) and lows around 8 °C (47 °F).
San Diego gets about 459 mm (18 in) of precipitation a year. The wettest month is March (112 mm over about 11 days) and the driest is July (0 mm).
| Month | Avg high | Avg low | Precipitation (in) | Wet days | Daylight |
|---|---|---|---|---|---|
| January | 63° | 47° | 3.9 | 8 | 10h 14m |
| February | 63° | 48° | 3.3 | 7 | 11h 2m |
| March | 62° | 49° | 4.4 | 11 | 11h 57m |
| April | 65° | 52° | 0.4 | 3 | 12h 59m |
| May | 68° | 57° | 0.3 | 3 | 13h 50m |
| June | 71° | 60° | 0.2 | 1 | 14h 18m |
| July | 75° | 63° | 0.0 | 0 | 14h 6m |
| August | 78° | 65° | 0.7 | 1 | 13h 22m |
| September | 77° | 64° | 0.8 | 2 | 12h 23m |
| October | 75° | 58° | 0.8 | 2 | 11h 24m |
| November | 70° | 52° | 2.1 | 5 | 10h 29m |
| December | 67° | 49° | 1.2 | 3 | 10h 1m |
Averages of daily values from the ERA5 reanalysis for 2023–2025 at San Diego's coordinates (model elevation 20 m), via Open-Meteo (CC BY 4.0). Three recent years are not a 30-year climate normal; reanalysis smooths local extremes and tends to count more light-rain days than a rain gauge would. Daylight is sunrise to sunset on the 15th of each month.
Weather questions for San Diego
What is the hottest month in San Diego?
August, with average highs of 25 °C (78 °F) and lows of 18 °C (65 °F) over 2023–2025. The coolest month is January, averaging 17 °C (63 °F) by day and 8 °C (47 °F) at night.
What is the rainiest month in San Diego?
March, with about 112 mm of precipitation on roughly 11 days. The driest month is July (0 mm), and the yearly total is around 459 mm.
When is the weather mildest in San Diego?
Going by the averages, April–December are the months with average daytime highs between 18 °C and 27 °C (64–81 °F) — warm but not hot. March is the month most likely to bring rain.
More about San Diego
Weather in nearby cities
New York
Forecast and current conditions.
Los Angeles
Forecast and current conditions.
Chicago
Forecast and current conditions.
Houston
Forecast and current conditions.
Phoenix
Forecast and current conditions.
Philadelphia
Forecast and current conditions.
San Antonio
Forecast and current conditions.
Dallas
Forecast and current conditions.
Austin
Forecast and current conditions.
More for San Diego
More for San Diego: local time, sunrise and sunset, moon phases, and the exact time zone.
About this forecast
The live forecast comes from Open-Meteo, which blends models from national weather services and is fetched fresh in your browser on each visit. Times in the hourly outlook are San Diego local time (America/Los_Angeles).