San Diego weather in December 2020

Get the latest coronavirus (COVID-19) updates for the USA with current travel advice, statistics and online resources.

  • 19°C maximum daytime temperature in December in San Diego19
    19°C max day temperature
  • 8 hours of sunshine per day
  • 5 days with some rainfall in December in San Diego5
    5 days with some rainfall
  • 8°C minimum night-time temperature in December in San Diego8
    8°C min night temperature
  • 10 hours of daylight per day in December in San Diego10
    10 hours of daylight per day
  • No heat & humidity in December in San Diego0
    No heat & humidity
  • 37 mm monthly rainfall in December in San Diego37
    37 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in December in San Diego3
    3 (Moderate) UV index
  • 15°C sea temperature in December in San Diego15
    15°C sea temperature
  • Top deals & discounts
  • San Diego weather overview
  • San Diego climate averages by month
  • More destinations
  • Best time to go to San Diego
  • San Diego 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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.

Recommended for California

  • Save on return flights to worldwide destinations with KLM
  • Book flights to Abu Dhabi, Jo'burg, Tokyo & more
  • Plus more flights to the Americas, Middle East & Europe

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 sunrise & sunset times for December 2020

Browse the sunrise & sunset times for San Diego in December 2020. Select a month to view San Diego sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st December 2020 06:33 16:42
Wednesday, 16th December 2020 06:44 16:45
Thursday, 31st December 2020 06:51 16:53
  • Save on flights to/from Hawaii with Hawaiian Airlines
  • Browse popular routes & find best fares
  • Plus check out top tips on flying to Hawaii & more

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Discover more about California

Where is hot in California in December for 2020/2021?

Below are average maximum temperatures at popular destinations in California in December. Select a destination to see more weather parameters.

More destinations & map >>

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.