San Diego weather in January 2020

  • 19°C maximum daytime temperature in January in San Diego19
    19°C max day temperature
  • 8 hours of sunshine per day
  • 6 days with some rainfall in January in San Diego6
    6 days with some rainfall
  • 7°C minimum night-time temperature in January in San Diego7
    7°C min night temperature
  • 10 hours of daylight per day in January in San Diego10
    10 hours of daylight per day
  • No heat & humidity in January in San Diego0
    No heat & humidity
  • 53 mm monthly rainfall in January in San Diego53
    53 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in January in San Diego3
    3 (Moderate) UV index
  • 15°C sea temperature in January in San Diego15
    15°C sea temperature

Going to San Diego? Find the best month to visit San Diego based on the weather.

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

Expect 19°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in San Diego in January. Check more long-term weather averages for San Diego in January before you book your next holiday to California in 2020/2021.

  • Pre-book San Diego car hire online & save
  • FREE additional driver available for San Diego Airport
  • Plus FREE breakdown assistance on all US rentals

More about San Diego

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

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.

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

Guide to San Diego weather in January

The average maximum daytime temperature in San Diego in January is a comfortable 19°C (66°F). The average night-time temperature is usually a cold 7°C (45°F). There are usually 8 hours of bright sunshine each day, which represents 76% of the 10 hours of daylight.

Expect 53mm (2.1 inches) of rainfall across the whole of January with 6 days with some rain falling. Maximum UV levels will be moderate (3 UV index) at midday when the skies are clear.

The average sea temperature in and around San Diego in January is 15°C (59°F).

San Diego sunrise & sunset times for January 2020

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


Date Sunrise times Sunset times
Wednesday, 1st January 2020 06:51 16:54
Thursday, 2nd January 2020 06:51 16:54
Friday, 3rd January 2020 06:51 16:55
Saturday, 4th January 2020 06:51 16:56
Sunday, 5th January 2020 06:52 16:57
Monday, 6th January 2020 06:52 16:57
Tuesday, 7th January 2020 06:52 16:58
Wednesday, 8th January 2020 06:52 16:59
Thursday, 9th January 2020 06:52 17:00
Friday, 10th January 2020 06:52 17:01
Saturday, 11th January 2020 06:52 17:02
Sunday, 12th January 2020 06:52 17:02
Monday, 13th January 2020 06:51 17:03
Tuesday, 14th January 2020 06:51 17:04
Wednesday, 15th January 2020 06:51 17:05
Thursday, 16th January 2020 06:51 17:06
Friday, 17th January 2020 06:51 17:07
Saturday, 18th January 2020 06:50 17:08
Sunday, 19th January 2020 06:50 17:09
Monday, 20th January 2020 06:50 17:10
Tuesday, 21st January 2020 06:49 17:11
Wednesday, 22nd January 2020 06:49 17:12
Thursday, 23rd January 2020 06:49 17:13
Friday, 24th January 2020 06:48 17:14
Saturday, 25th January 2020 06:48 17:14
Sunday, 26th January 2020 06:47 17:15
Monday, 27th January 2020 06:47 17:16
Tuesday, 28th January 2020 06:46 17:17
Wednesday, 29th January 2020 06:46 17:18
Thursday, 30th January 2020 06:45 17:19
Friday, 31st January 2020 06:44 17:20
  • Save on hotel stays in San Diego, California with Hilton
  • Browse available hotels on a map to find the perfect location
  • Book online with Hilton Hotels for the lowest price

Back to top

Popular California destinations

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

Destinations search >>

More California destinations

All California destinations >>

All destinations (A to Z)

Can't see your chosen destination? Use our A to Z search to find your required the holiday weather guide:

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

Related posts

Popular travel offers

Top ^