San Francisco weather in August 2019

  • 20°C maximum daytime temperature in August in San Francisco20
    20°C max day temperature
  • 10 hours of sunshine per day
  • 1 day with some rainfall in August in San Francisco1
    1 day with some rainfall
  • 13°C minimum night-time temperature in August in San Francisco13
    13°C min night temperature
  • 14 hours of daylight per day in August in San Francisco14
    14 hours of daylight per day
  • No heat & humidity in August in San Francisco0
    No heat & humidity
  • 2 mm monthly rainfall in August in San Francisco2
    2 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in San Francisco9
    9 (Very High) UV index
  • 14°C sea temperature in August in San Francisco14
    14°C sea temperature
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The August weather guide for San Francisco, 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.

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

Guide to San Francisco weather in August

The average maximum daytime temperature in San Francisco in August is a comfortable 20°C (68°F). The average night-time temperature is usually a cool 13°C (55°F). There are usually 10 hours of bright sunshine each day, which represents 70% of the 14 hours of daylight.

Expect 2mm (0.1 inches) of rainfall across the whole of August with 1 day with some rain falling. Maximum UV levels will be very high (9 UV index) at midday when the skies are clear.

The average sea temperature in and around San Francisco in August is 14°C (57°F).

San Francisco sunrise & sunset times for August 2019

Browse the sunrise & sunset times for San Francisco in August 2019. Select a month to view San Francisco sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st August 2019 06:13 20:18
Friday, 16th August 2019 06:26 20:01
Saturday, 31st August 2019 06:39 19:41
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Popular California destinations

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

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