Santa Barbara weather in August 2025

Expect daytime maximum temperatures of 25°C in Santa Barbara, California in August based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 25°C maximum daytime temperature in August in Santa Barbara25
    25°C max day temperature
  • 10 hours of sunshine per day
  • 1 day with some rainfall in August in Santa Barbara1
    1 day with some rainfall
  • 13°C minimum night-time temperature in August in Santa Barbara13
    13°C min night temperature
  • 13 hours of daylight per day in August in Santa Barbara13
    13 hours of daylight per day
  • Low heat & humidity in August in Santa BarbaraL
    Low heat & humidity
  • 3 mm monthly rainfall in August in Santa Barbara3
    3 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Santa Barbara9
    9 (Very High) UV index
  • 18°C sea temperature in August in Santa Barbara18
    18°C sea temperature

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The August weather guide for California (Santa Barbara) 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)

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More about California

How hot is it in Santa Barbara in August?

Daytime temperatures usually reach 25°C in Santa Barbara in August with low heat and humidity, falling to 13°C at night.

How sunny is it in Santa Barbara in August?

There are normally 10 hours of bright sunshine each day in Santa Barbara in August - that's 75% of daylight hours.

How warm is the sea around Santa Barbara in August?

The average sea temperature around Santa Barbara in August is 18°C.

Does it ever rain in Santa Barbara in August?

There is usually 1 day with some rain in Santa Barbara in August and the average monthly rainfall is 3mm.

Santa Barbara August sunrise & sunset times

Browse the sunrise and sunset times for Santa Barbara in August 2025. Select a month to view Santa Barbara sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:10 19:00
Saturday, 16th August 2025 05:21 18:45
Sunday, 31st August 2025 05:32 18:26

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