Weather in San Diego in January 2018

Check the weather in San Diego in January based on long-term weather averages before you book your next holiday to California in 2018. Expect daytime temperatures to reach 19°C with on average 8 hours of sunshine per day in San Diego in January.

What is the weather like in San Diego in January?
How hot is San Diego in January? 19°C
How sunny is San Diego in January? 8 sunshine hours/day
How wet is San Diego in January? 53 mm rainfall
How warm is the sea around San Diego in January? 15°C

Weather in San Diego in January

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

  • 19°C maximum daytime temperature in January in San Diego19
    19°C max day temperature
  • 8 hours of sunshine per day (76% of daylight hours) in January in San Diego8
    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

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

  • Book special offers on Virgin Atlantic flights to Los Angeles
  • Flights depart from London Heathrow Airport
  • Return flights to Los Angeles from £527

Expires at 23:59 on Friday 31st March 2017 · View all Virgin Atlantic offers

More about San Diego

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

More about San Diego weather in January

The average maximum daytime temperature in San Diego in January is a comfortable 19°C (66°F). There are usually 8 hours of bright sunshine each day, which represents 76% of the 10 hours of daylight. The average sea temperature in and around San Diego in January is 15°C (59°F).

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 night-time temperature is usually a cold 7°C (45°F). The weather in San Diego in January is represented by San Diego.

San Diego sunrise & sunset times for January 2018

Browse the sunrise & sunset times for San Diego in January 2018. Select a month to view San Diego sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st January 2018 06:51 16:54
Tuesday, 2nd January 2018 06:51 16:55
Wednesday, 3rd January 2018 06:51 16:55
Thursday, 4th January 2018 06:51 16:56
Friday, 5th January 2018 06:52 16:57
Saturday, 6th January 2018 06:52 16:58
Sunday, 7th January 2018 06:52 16:59
Monday, 8th January 2018 06:52 16:59
Tuesday, 9th January 2018 06:52 17:00
Wednesday, 10th January 2018 06:52 17:01
Thursday, 11th January 2018 06:52 17:02
Friday, 12th January 2018 06:51 17:03
Saturday, 13th January 2018 06:51 17:04
Sunday, 14th January 2018 06:51 17:05
Monday, 15th January 2018 06:51 17:06
Tuesday, 16th January 2018 06:51 17:06
Wednesday, 17th January 2018 06:51 17:07
Thursday, 18th January 2018 06:50 17:08
Friday, 19th January 2018 06:50 17:09
Saturday, 20th January 2018 06:50 17:10
Sunday, 21st January 2018 06:49 17:11
Monday, 22nd January 2018 06:49 17:12
Tuesday, 23rd January 2018 06:48 17:13
Wednesday, 24th January 2018 06:48 17:14
Thursday, 25th January 2018 06:47 17:15
Friday, 26th January 2018 06:47 17:16
Saturday, 27th January 2018 06:46 17:17
Sunday, 28th January 2018 06:46 17:18
Monday, 29th January 2018 06:45 17:19
Tuesday, 30th January 2018 06:45 17:20
Wednesday, 31st January 2018 06:44 17:21
  • Book low fares on flights to San Francisco with Virgin Atlantic
  • Flights depart from London Heathrow Airport
  • Join Flying Club & earn miles with every booking

Back to top

San Diego weather by month

Check San Diego weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

Back to top

Popular California destinations

More 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  

More destinations

Related posts

Popular travel offers

Top ^