San Juan Island is remarkably sunny, located in a rain shadow cast by the
spectacular mountains of the Olympic Peninsula and Vancouver Island.
While nearby Seattle is drenched in roughly 58 inches of rain per year,
San Juan Island averages only 29 inches. Unlike most of the Pacific
Northwest, we see the sun an average of 250 day a year. If you need
a break from the gray drizzle, it’s just a short trip from the city to San
Juan Island. For just $75 each way, Kenmore Air can get you here from
Seattle in about 35 minutes, any day of the week all year round.

Visitors to San Juan Island can expect sunny summer days with average high
temperatures rarely exceeding the mid-70s (24 C). Summer evening temperatures
are cooled by ocean breezes to an average low around 49 degrees (9 C). In
winter, average high temperatures are around the mid-40’s (7 C), with average
winter lows near 35 degrees (2 C). The constant sunshine is something we’ve just
had to learn to live with.