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San Diego weather in December 2021
Get the latest coronavirus (Covid-19) updates for California with current travel advice and statistics on new cases per 100,000 and vaccine.
- 19°C max day temperature
19 - 8 hours of sunshine per day
- 5 days with some rainfall
5 - 8°C min night temperature
8 - 10 hours of daylight per day
10 - No heat & humidity
0 - 37 mm of monthly rainfall
37 - 3 (Moderate) UV index
3 - 15°C sea temperature
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The December 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.
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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.
Metric (°C / mm) | Imperial (°F / inches)
San Diego sunrise & sunset times for December 2021
Browse the sunrise and sunset times for San Diego in December 2021. Select a month to view San Diego sunrise & sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Wednesday, 1st December 2021 | 06:33 | 16:42 |
| Thursday, 16th December 2021 | 06:44 | 16:45 |
| Friday, 31st December 2021 | 06:51 | 16:53 |
- Save 20% on COVID-19 Fit to Fly test & travel certificate
- Home COVID-19 PCR test with free express delivery
- Receive online results within 24-72 hours once test at lab
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