San Juan Island - Kanaka Bay Rainfall Forecast

Today 30 Aug
10%
Mon 31 Aug
5%
Tue 1 Sep
45%
Wed 2 Sep
60%
Thu 3 Sep
45%
Fri 4 Sep
25%
Sat 5 Sep
20%

San Juan Island - Kanaka Bay Rainfall Statistics

August Rainfall

Friday Harbor Airport (3.1 miles)

Total Rainfall 2026
10.4in
Daily Average 2026
0.04in
Wettest Day 12 January, 2026
0.8in
Wet Days 2026
70/242 (29%)
Total Rainfall July
0.8in
Daily Average July
0.02in
Wettest Day 16 July, 2026
0.3in
Wet Days July
5/31 (16%)
Total Rainfall August
0.2in
Daily Average August
0.01in
Wettest Day 23 August, 2026
0.2in
Wet Days August
2/30 (7%)

Climate (2021–2025)

Friday Harbor Airport (3.1 miles)

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Annual Average 2021–2025
20.6in
Monthly Average 2021–2026
1.8in
Daily Average 2021–2026
0.1in
Wettest Day 15 November, 2021
1.9in

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