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Weather in December in San Diego, California

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< December >
 
Normal Max/ High Temperature 19°C (66°F)
 
Average Temperature 14°C (57°F)
 
Min/ Low Temperature 9°C (49°F)
 
Normal Precipitation 40mm (1.6in)
Number of Wet Days (probability of rain on a day) 6 (19%)
Average Sunlight per day 07:36
Average Daylight per day 10:01
Sunny (Cloudy) Daylight Hours 77% (23%)
Sun altitude at solar noon on the 21st day.
33.9°


  • The average temperature in San Diego, California in December is mild at 14.1 °C (57.38 °F).
  • Afternoons can be somewhat warm with average high temperatures reaching 18.9 °C (66 °F).
  • Overnight temperatures are generally a little cool with an average low of 9.3 °C (48.7 °F).
  • In December the average diurnal temperature range/ variation is 9.6 °C (17.3 °F).
  • The weather in December is dry with periodic rain. A mere 39.9mm (1.6in) of liquid precipitates across an average of 6 days.
  • The skies in San Diego, California are slightly sunny having on balance a welcome 7:36 of intense solar radiation per day.
  • The shortest day is 9:59 long and the longest day is 10:07 long with an average length of 10:01.
  • There are approximately 2:16 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 77% of daylight hours and cloudy 23% of daylight hours.

Check the distance to and compare the San Diego, California December averages with somewhere beginning with:

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Weather Trend Graph for December in San Diego, California, Usa

Graph of weather in San Diego, California in December

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