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San Diego weather in January 2021
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- 1919°C max day temperature
- 66 days with some rainfall
- 77°C min night temperature
- 1010 hours of daylight per day
- 0No heat & humidity
- 5353 mm of monthly rainfall
- 33 (Moderate) UV index
- 1515°C sea temperature
The January weather guide for San Diego, California shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Recommended for California
How hot is it in San Diego in January?
Daytime temperatures usually reach 19°C in San Diego in January, falling to 7°C at night.
How sunny is it in San Diego in January?
There are normally 8 hours of bright sunshine each day in San Diego in January - that's 76% of daylight hours.
How warm is the sea around San Diego in January?
The average sea temperature around San Diego in January is 15°C.
Does it rain in San Diego in January?
There are usually 6 days with some rain in San Diego in January and the average monthly rainfall is 53mm.
San Diego sunrise & sunset times for January 2021
Browse the sunrise & sunset times for San Diego in January 2021. Select a month to view San Diego sunrise & sunset times for the next twelve months.
|Date||Sunrise times||Sunset times|
|Friday, 1st January 2021||06:51||16:54|
|Saturday, 16th January 2021||06:51||17:07|
|Sunday, 31st January 2021||06:44||17:21|
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Metric (°C / mm) | Imperial (°F / inches)
Discover more about California
Where is hot in California in January for 2021/2022?
Below are average maximum temperatures at popular destinations in California in January. Select a destination to see more weather parameters.
- Los Angeles
- Beverly Hills
- San Diego
- Santa Monica
- Death Valley
- Santa Barbara
- Big Sur
- Palm Springs
- San Francisco
- Lake Tahoe
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