Friday Harbor weather in August 2025

Expect 70°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Friday Harbor in August. Check more long-term weather averages for Friday Harbor in August before you book your next holiday to Washington State in 2025/2026.

• 70
  70°F max day temperature
• 9
  9 hours of sunshine per day
• 6
  6 days with some rainfall
• 52
  52°F min night temperature
• 14
  14 hours of daylight per day
• 0
  No heat & humidity
• 1.0
  1.0 inches of monthly rainfall
• 6
  6 (High) UV index
• 55
  55°F sea temperature

More about Friday Harbor

• 
  Overview
• 
  Best time to visit
• 
  Weather by month
• 
  5-day weather forecast
• 
  Destinations
• 
  Travel advice
• 
  Deals & discounts

Friday Harbor by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Washington State

• Travelbag^*
• Titan Travel^*
• Saga Holidays^*
• Cosmos^*

Travel Up: Top offers on flights worldwide

Sale

• Check out top flight deals & low fares from popular airlines
• Search for return & one-way flights or multi-city trips
• Airlines include BA, Virgin Atlantic, United & Turkish Airlines

Go to Travel Up deal >>

View all Travel Up offers

The August weather guide for Washington State (Friday Harbor) 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)

Back to top

More about the USA

Friday Harbor August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Related posts

Popular travel offers

Explore holidays in the sun for less

• Beach holidays
• Family holidays
• City breaks
• Summer holidays
• Winter sun holidays
• Holiday offers
• Top travel brands
• Airlines & flights
• Discount hotels
• Airport parking deals
• TUI
• Jet2holidays
• easyJet holidays
• Love Holidays
• Black Friday sales

More holidays

Airport parking

• Manchester Airport
• Stansted Airport
• Bristol Airport
• Luton Airport
• Birmingham Airport
• Edinburgh Airport
• Gatwick Airport
• Glasgow Airport
• Newcastle Airport

More parking

Airport lounges

• Manchester Airport
• Birmingham Airport
• Bristol Airport
• Edinburgh Airport
• Glasgow Airport
• Heathrow Airport
• Newcastle Airport
• Stansted Airport
• Gatwick Airport

More lounges

Top ^