San Diego Weather in January
What's the weather like in San Diego (California) in January 2024?
The climate in San Diego during January can be summarized as mild and reasonably dry.
January is in the winter in San Diego and is typically the coldest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 7°C (45°F) is normal.
| Daytime temperature | 18.7°C 65.6°F |
|---|---|
| Nightly temperature | 7.4°C 45.2°F |
| Average temperature | 13°C 55.4°F |
| Daily sunshine | 8.5 hrs |
| Avg rainfall | 53 mm 2.1 ins |
| Rainy days | 6 days |
| Sea temperature | 15.2°C 59.3°F |
| Humidity | 64% |
| Windspeed | 11.2kph 7 mph |
On average January is the wettest month of the year in San Diego with around 53mm 2.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.5 hours of sunshine per day.
January temperatures in San Diego
January rainfall
January hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Diego in January 2024.
Other monthly averages
Best places to visit in January
San Diego weather stats
| Hottest month: | August | 26.7°C 80.1°F |
|---|---|---|
| Driest month: | July | 1mm 0ins |
| Sunniest month: | January | 8.5hrs |
| Coldest month: | January | 18.4°C 65.1°F |
| Wettest month: | January | 53mm 2.1ins |
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