Friday Harbor weather in May 2024

Expect 61°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Friday Harbor in May. Check more long-term weather averages for Friday Harbor in May before you book your next holiday to Washington State in 2024/2025.

  • 61°F maximum daytime temperature in May in Friday Harbor61
    61°F max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in May in Friday Harbor11
    11 days with some rainfall
  • 45°F minimum night-time temperature in May in Friday Harbor45
    45°F min night temperature
  • 15 hours of daylight per day in May in Friday Harbor15
    15 hours of daylight per day
  • No heat & humidity in May in Friday Harbor0
    No heat & humidity
  • 1.3 inches monthly rainfall in May in Friday Harbor1.3
    1.3 inches of monthly rainfall
  • UV (maximum) index 6 (High) in May in Friday Harbor6
    6 (High) UV index
  • 50°F sea temperature in May in Friday Harbor50
    50°F sea temperature

More about Friday Harbor

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