Roche Harbor, San Juan Island Wave Conditions
Today’s wave height and sea conditions for Roche Harbor, San Juan Island, Washington, from the National Weather Service.
Moderate seas near Roche Harbor, San Juan Island
Fine for most boats, lumpy for small craft.
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Explore wave forecasts on the chart
Select a coastal location on Pathr’s nautical chart to see its National Weather Service wave forecast. These are forecast locations, not live buoy measurements; sheltered spots may have no seas forecast.
Frequently asked
How big are the waves at Roche Harbor, San Juan Island right now?+
The National Weather Service forecasts seas of about 2 ft near Roche Harbor, San Juan Island, Washington today, with 3 mph E wind, so conditions are moderate. Fine for most boats, lumpy for small craft.
Is it a good day to go out at Roche Harbor, San Juan Island?+
With seas around 2 ft, conditions are moderate. Fine for most boats, lumpy for small craft. Always check the latest marine forecast and any small-craft advisories before heading out.
Where do these wave conditions come from?+
Wave heights on these pages come from the National Weather Service Coastal Waters Forecast for the marine zone around each spot. They are a forecast, not a measurement. In the Pathr app, the wind and waves layers are free and show right on the chart.
Bridge clearances near Roche Harbor, San Juan Island
Vertical clearance and drawbridge opening schedules for the bridges closest to Roche Harbor, San Juan Island. Check them against your air draft before you head out.
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