San Diego weather in October 2026

Expect daytime maximum temperatures of 75°F in San Diego, California in October based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 75°F maximum daytime temperature in October in San Diego75
    75°F max day temperature
  • 8 hours of sunshine per day
  • 2 days with some rainfall in October in San Diego2
    2 days with some rainfall
  • 57°F minimum night-time temperature in October in San Diego57
    57°F min night temperature
  • 11 hours of daylight per day in October in San Diego11
    11 hours of daylight per day
  • No heat & humidity in October in San Diego0
    No heat & humidity
  • 0.3 inches monthly rainfall in October in San Diego0.3
    0.3 inches of monthly rainfall
  • UV (maximum) index 6 (High) in October in San Diego6
    6 (High) UV index
  • 66°F sea temperature in October in San Diego66
    66°F sea temperature

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The October weather guide for California (San Diego) 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)  |  Imperial (°F)

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More about California

How hot is it in San Diego in October?

Daytime temperatures usually reach 79°F in San Diego in October with low heat and humidity, falling to 59°F at night.

How sunny is it in San Diego in October?

There are normally 8 hours of bright sunshine each day in San Diego in October - that's 73% of daylight hours.

Does it ever rain in San Diego in October?

There are usually 2 days with some rain in San Diego in October and the average monthly rainfall is 0.4 inches.

San Diego October sunrise & sunset times

Browse the sunrise and sunset times for San Diego in October 2026. Select a month to view San Diego sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st October 2026 05:43 17:33
Friday, 16th October 2026 05:54 17:14
Saturday, 31st October 2026 06:06 16:58

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