San Juan Island - Grandmas Cove Wind Forecast
San Juan Island - Grandmas Cove Wind Statistics
March Wind
Friday Harbor Airport (3.7 miles)
Strongest 11 March, 2026
17.2mph SWAverage March
6.7mph
Climate (2010–Present)
Friday Harbor Airport (3.7 miles)
Strongest 19 March, 2025
63.1mph SAverage 2021–2026
5.9mph