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Climate of San Diego
San Diego has a mediterranean climate. The summers are hot and dry, and the temperature is mild in the winter. The average annual temperature for San Diego is 40° degrees and there is about 72 inch of rain in a year. It is dry for 265 days a year with an average humidity of 67% and an UV-index of 5.
Climate averages for the whole year
- Day: the average daily temperature during the day is between 17°C and 25°C
- Night:the average nighttime temperature is between 11°C and 18°C
- Sea temperature: the sea temperature is between 16°C and 22°C
- Rain: it rains 56 days and there is a total of approximately 183 mm rainfall
- Sun hours: throughout the year there are 3496 sun hours
| Maximum temperature: | between 17°C and 25°C |
| Warmest month: | 25°C in August |
| Coldest month: | 17°C in February |
| Night temperature: | between 11°C and 18°C |
| Sea temperature: | between 16°C and 22°C |
| Dry days: | 309 days |
| Days with rain: | 56 days |
| Days with snow: | 0 days |
| Total rain sum: | 183 mm |
| Hours of sunshine: | 3496 hours |
Temperature graph
This graph shows the average maximum temperature (red) and minimum temperature (blue) for San Diego.
Precipitation graph
This graph shows the average amount of rainfall per month for San Diego.
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Climate table of San Diego
In this climate table you can see at a glance what the average weather per month is for San Diego. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for San Diego might be like in a given month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day temp. (°F) | 64 | 63 | 65 | 66 | 67 | 71 | 75 | 77 | 77 | 73 | 69 | 63 |
| Night temp. (°F) | 53 | 52 | 52 | 53 | 55 | 58 | 64 | 65 | 65 | 61 | 57 | 52 |
| Water temp. (°F) | 61 | 61 | 62 | 62 | 66 | 67 | 70 | 71 | 69 | 67 | 65 | 63 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Precipitation (inch) | 11 | 15 | 6 | 2 | 3 | 1 | 6 | 4 | 4 | 4 | 5 | 13 |
| Days with rain | 5 | 6 | 6 | 5 | 4 | 2 | 6 | 4 | 4 | 4 | 5 | 5 |
| Dry days | 26 | 22 | 25 | 25 | 27 | 28 | 25 | 27 | 26 | 27 | 25 | 26 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Sun hours per day | 7 | 7 | 9 | 12 | 11 | 12 | 12 | 12 | 10 | 9 | 7 | 7 |
| Wind force (Bft) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| UV-index | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 5 | 5 | 4 |
Best time to visit San Diego
The best time to visit San Diego in the state of California is from January and March through November. In this period you have a pleasant temperature and almost no precipitation. The highest average temperature in San Diego is 77°F in August and the lowest is 63°F in February. The highest water temperature is 71°F and at its coldest the water is 61°F.
Climate of San Diego by month
What is the average climate in a given month for San Diego? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.
San Diego weather experiences
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