The San Juan Islands enjoy an average of 247 days with sunshine and about half the rainfall of Seattle, thanks to the "rain shadow" effect of the Olympic Mountains to the south. It's no wonder visitors are attracted to the islands year round! Check out the 7-day forecast for Friday Harbor.

IslandCam.com provides 24 hour, live camera coverage of the San Juan Islands including images of a number of the ferry parking lots.

 

Weather Averages in Fahrenheit and Inches
Month High/Low Precipitation
January 46 / 36 3.57
February 48 / 36 2.28
March 53 / 39 2.17
April 57 / 41 1.78
May 63 / 45 1.66
June 67 / 48 1.29
July 71 / 51 0.88
August 71 / 50 1.06
September 66 / 48 1.26
October 58 / 44 2.85
November 50 / 39 4.33
December 46 / 36; 3.73