Lime Kiln Point Lighthouse
Friday Harbor · San Juan Islands · Washington
Visibility Breakdown
Visibility by position
Solid = diver report · outlined = today's forecast
Post Break: The range past where any waves are forming, where the water starts to have a significant increase in visibility. There might be some sediment here, but swell energy is diffused and the water is calmer.
Open Water: This zone is far out enough from the shore that the water is at its clearest. It’s deep enough that sediment is not disturbed by the wave energy at the surface. Haze can sit near the surface, so the water is usually clearer the deeper you go.
Through the day
Today's visibility readings at this spot, shown at the hour each one was taken.
Every bar is a reading for the Post Break zone.
This chart shows measured diver reports only.
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Why it reads 17–21 ft
Today's forecast runs
The clarity holds through the day, with a light afternoon onshore the only disturbance to the entry shallows.
Medium confidence
7-Day Forecast
Today is the live headline above. Tomorrow onward is the algorithm's forecast from predicted swell, wind, and rain, updated each morning and at 6 PM Pacific.
Map and parking
Paved State Parks lot near the interpretive center and lighthouse; Discover Pass required ($10 per day, $45 per year). Accessible restrooms, drinking water, picnic tables. Dead Man's Bay uses a separate small trailhead pullout south of the lighthouse where parking is limited to 2 to 4 vehicles, so early arrival is advised.
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About Lime Kiln Point Lighthouse
Lime Kiln Point sits on the west side of San Juan Island, off Westside Road, within Lime Kiln Point State Park. The dive begins at a narrow trail down to the water to the left of the lighthouse, where a small sheltered bay lets divers wait for slack water before venturing to the drop-off. Bull kelp grows just off the rocks, and past the kelp line a rocky drop-off holds fish and encrusting invertebrates. Dead Man's Bay, a small pebble and boulder cove just south of the point, is part of the same shore-dive entry: bull kelp along exposed rocks at low tide gives way to a boulder field where giant Pacific octopus have been recorded.
Species found here
Researched habitat and range candidates. A listed species may be seasonal or depth-limited; this is not a confirmed sighting at this location.
Spot strategies
Seagrass
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