San Francisco weather in May

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Check the San Francisco, California weather in May before you book your next holiday. This gives the best indication of the weather in May and includes figures for temperature, sunshine and rainfall.

  • 18°C maximum daytime temperature in May in San Francisco18
    18°C max day temperature
  • 11 hours of sunshine per day (75% of daylight hours) in May in San Francisco11
    11 hours of sunshine per day
  • 3 days with some rainfall in May in San Francisco3
    3 days with some rainfall
  • 10°C minimum night-time temperature in May in San Francisco10
    10°C min night temperature
  • 14 hours of daylight per day in May in San Francisco14
    14 hours of daylight per day
  • No heat & humidity in May in San Francisco0
    No heat & humidity
  • 7 mm monthly rainfall in May in San Francisco7
    7 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in San Francisco8
    8 (Very High) UV index
  • 12°C sea temperature in May in San Francisco12
    12°C sea temperature

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

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