Bioluminescence
Noctiluca and other dinoflagellates glow in the shallows on still summer nights. Best when the water is warm and calm, well after dark, with little moon.
Drag anywhere on the chart to read the tide, temp and wind at that time. Tap or drag the strip below, or use ← →, to change days.
Orange line = air temp (NWS forecast: solid where observed, dashed ahead). Blue line = measured water temp. Sky icons show sun/cloud at each mark; wind arrows point downwind, in knots.
Slack from current station PUG1503 (predicted) — a window is where the current runs under 0.2 kt
Late spring through mid-summer brings the year's big daytime minus tides — the water pulls way back and the beach opens up. The best mornings for tidepooling, moon snails, sand dollars, and a long flat walk out.
Best: biggest daytime low tides, late morning to midday
Noctiluca and other dinoflagellates glow in the shallows on still summer nights. Best when the water is warm and calm, well after dark, with little moon.
Late-summer blooms (including the ones behind bioluminescence) show up as a chlorophyll rise on the buoy.
Edmonds sits right on the Marine Area 9/10 boundary (Edwards Point): the town and its beaches — Brackett's Landing, the ferry, the fishing pier, Marina Beach — read as Area 10 (Seattle-Bremerton), with Area 9 waters just to the north. Confirm your exact spot's area and its current open days, size, and limits with WDFW before you go — they change every year and mid-season.
NON-AUTHORITATIVE — this app does not track open days, size, limits, or area boundaries. Check current WDFW rules for your marine area before you go.
Puget Sound salmon move through the Sound in summer and fall (pink salmon return in odd-numbered years). Notable this time of year, not fishing advice.
Late spring through mid-summer brings the year's big daytime minus tides — the water pulls way back and the beach opens up. The best mornings for tidepooling, moon snails, sand dollars, and a long flat walk out.
Late summer packs the shallows and the marina with drifting smacks of moon jellies — pale, pulsing, and harmless. Easy to spot from a dock, and mesmerizing when the low sun catches them.
Seasonal notes are informational only — not legal, safety, or fishing advice. Verify crabbing and shellfish rules with WDFW before you go. Tides: predicted (harmonic), NOAA CO-OPS 9447427. Water & wind from the ORCA Point Wells mooring (UW NWEM, enabled by NANOOS and the WA Ocean Acidification Center); wind climatology from its hourly history. Current speed is PREDICTED at NOAA station PUG1503, ~2.9 mi west, at a subsurface bin — a nearby estimate, not a surface reading at Edmonds. Air temp & wind forecast from NWS for the Edmonds waterfront.