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Speelyai Bay Park — Boating Conditions
Tides, water temp & weather • Cowlitz County, WA
Boating Conditions at Speelyai Bay Park
Current wind, air and water temperature, tide times and a 10-day forecast for Speelyai Bay Park on Merwin Reservoir in Cowlitz County, Washington. Check conditions before you launch.
Tide Times
Nearest tide station: St Helens, OR · ~20 mi away
ThuLow 5:42 AM (0.3 ft)High 9:47 AM (1.2 ft)Low 3:54 PM (0.2 ft)High 9:50 PM (2.9 ft)
FriLow 7:06 AM (0.3 ft)High 11:12 AM (1.1 ft)Low 4:44 PM (0.4 ft)High 10:49 PM (2.8 ft)
Weather & wave data from Open-Meteo. Tides & water temperature from NOAA CO-OPS. Conditions are estimates for trip planning — always confirm locally and check official marine forecasts before heading out.
