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Rosario Resort — Boating Conditions
Tides, water temp & weather • San Juan County, WA
Boating Conditions at Rosario Resort
Current wind, air and water temperature, tide times and a 10-day forecast for Rosario Resort on Cascade Bay in San Juan County, Washington. Check conditions before you launch.
Right Now
Clear
Calm — good conditions to get on the water
Air Temp
52°F
Wind
3 mph
gusts 5 mph
Tide Times
Nearest tide station: Friday Harbor, WA · ~9 mi away
TueHigh 12:15 AM (5.7 ft)Low 8:24 AM (0.7 ft)High 4:37 PM (7.1 ft)Low 10:10 PM (5 ft)
WedHigh 1:45 AM (5.7 ft)Low 9:09 AM (0.8 ft)High 4:54 PM (7 ft)Low 10:26 PM (4.4 ft)
Next Few Hours
Now
☀️
52°
4 mph
6AM
☀️
51°
4 mph
7AM
☀️
51°
3 mph
8AM
☀️
52°
3 mph
9AM
☀️
57°
1 mph
10AM
☀️
59°
4 mph
10-Day Boating Forecast
Tue, 9/22
⛅
65° / 51°
Wind 9, gusts 16 mph
3% rain
Wed, 9/23
⛅
60° / 50°
Wind 6, gusts 15 mph
6% rain
Thu, 9/24
🌧️
59° / 51°
Wind 12, gusts 16 mph
77% rain
Fri, 9/25
🌧️
63° / 49°
Wind 16, gusts 21 mph
71% rain
Sat, 9/26
⛅
60° / 46°
Wind 8, gusts 17 mph
15% rain
Sun, 9/27
🌧️
52° / 48°
Wind 6, gusts 11 mph
15% rain
Mon, 9/28
⛅
60° / 47°
Wind 9, gusts 18 mph
28% rain
Tue, 9/29
🌧️
57° / 51°
Wind 7, gusts 13 mph
33% rain
Wed, 9/30
🌧️
61° / 52°
Wind 12, gusts 22 mph
28% rain
Thu, 10/1
⛅
58° / 47°
Wind 10, gusts 16 mph
24% rain
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.
