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San Diego weather in December 2023
Expect 19°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in San Diego in December. Check more long-term weather averages for San Diego in December before you book your next holiday to California in 2023/2024.
- 1919°C max day temperature
- 55 days with some rainfall
- 88°C min night temperature
- 1010 hours of daylight per day
- 0No heat & humidity
- 3737 mm of monthly rainfall
- 33 (Moderate) UV index
- 1515°C sea temperature
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Recommended for San Diego
The December weather guide for California (San Diego) 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.
Metric (°C / mm) | Imperial (°F / inches)
More about California
How hot is it in San Diego in December?
Daytime temperatures usually reach 19°C in San Diego in December, falling to 8°C at night.
How sunny is it in San Diego in December?
There are normally 8 hours of bright sunshine each day in San Diego in December - that's 75% of daylight hours.
How warm is the sea around San Diego in December?
The average sea temperature around San Diego in December is 15°C.
Does it rain in San Diego in December?
There are usually 5 days with some rain in San Diego in December and the average monthly rainfall is 37mm.
San Diego December sunrise & sunset times
Browse the sunrise and sunset times for San Diego in December 2023. Select a month to view San Diego sunrise and sunset times for the next 12 months.
|Date||Sunrise times||Sunset times|
|Friday, 1st December 2023||06:33||16:42|
|Saturday, 16th December 2023||06:44||16:45|
|Sunday, 31st December 2023||06:51||16:53|
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