Roche Harbor, San Juan Island, WA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Sun
Aug 23 		AM Showers
Close Hourly 		70º / 54º 33% SSE 7 mph 69%
12pm Cloudy 63º 2% S 6 mph 77%
1pm Mostly Cloudy 64º 2% SSE 7 mph 75%
2pm Partly Cloudy 67º 2% SSE 6 mph 68%
3pm Partly Cloudy 69º 1% SSE 7 mph 63%
4pm Partly Cloudy 69º 1% SSE 7 mph 63%
5pm Mostly Sunny 68º 1% SSE 6 mph 64%
6pm Mostly Sunny 66º 3% SSE 4 mph 68%
7pm Mostly Sunny 65º 4% SSE 3 mph 71%
8pm Sunny 62º 6% SSE 3 mph 77%
9pm Clear 60º 7% SE 2 mph 81%
10pm Clear 59º 7% SE 2 mph 85%
11pm Clear 58º 8% ESE 1 mph 87%
Mon
Aug 24 		Partly Cloudy
View Hourly 		73º / 57º 9% N 8 mph 72%
12am Mostly Clear 57º 8% ENE 1 mph 88%
1am Mostly Clear 57º 9% NE 1 mph 90%
2am Partly Cloudy 56º 9% NE 1 mph 90%
3am Partly Cloudy 56º 9% NNE 1 mph 91%
4am Partly Cloudy 56º 9% N 1 mph 93%
5am Partly Cloudy 55º 9% N 1 mph 92%
6am Partly Cloudy 55º 9% N 2 mph 93%
7am Partly Cloudy 56º 9% N 2 mph 92%
8am Partly Cloudy 59º 8% N 3 mph 86%
9am Partly Cloudy 61º 7% N 4 mph 86%
10am Partly Cloudy 63º 10% N 5 mph 80%
11am Sunny 65º 6% N 6 mph 75%
12pm Sunny 67º 8% N 6 mph 71%
1pm Sunny 68º 4% N 7 mph 68%
2pm Sunny 70º 3% N 7 mph 64%
3pm Mostly Sunny 70º 2% NNE 8 mph 63%
4pm Sunny 71º 2% N 7 mph 60%
5pm Sunny 71º 2% N 7 mph 59%
6pm Sunny 70º 2% N 6 mph 60%
7pm Sunny 69º 2% N 4 mph 63%
8pm Sunny 65º 4% N 2 mph 68%
9pm Clear 64º 5% NNW 1 mph 71%
10pm Clear 62º 5% NW 1 mph 74%
11pm Clear 61º 5% NW 1 mph 76%
Tue
Aug 25 		Partly Cloudy
View Hourly 		75º / 56º 7% ENE 4 mph 67%
12am Clear 61º 5% NW 1 mph 76%
1am Clear 61º 5% NNW 0 mph 76%
2am Clear 60º 5% N 0 mph 77%
3am Clear 60º 5% NNE 1 mph 77%
4am Clear 60º 6% N 1 mph 79%
5am Clear 59º 6% N 1 mph 80%
6am Clear 58º 7% N 1 mph 82%
7am Sunny 60º 7% N 1 mph 82%
8am Mostly Sunny 62º 6% N 2 mph 77%
9am Mostly Sunny 65º 5% NNE 2 mph 77%
10am Partly Cloudy 66º 5% NNE 3 mph 72%
11am Partly Cloudy 68º 4% NE 3 mph 68%
Wed
Aug 26 		Partly Cloudy 69º / 57º 9% SSE 9 mph 70%
Thu
Aug 27 		Mostly Sunny 68º / 55º 18% S 8 mph 68%
Fri
Aug 28 		Mostly Sunny 68º / 55º 8% S 6 mph 69%
Sat
Aug 29 		Partly Cloudy 69º / 54º 16% S 5 mph 66%
Sun
Aug 30 		Partly Cloudy 68º / 54º 6% SSE 5 mph 66%

Weather Radar for Roche Harbor, San Juan Island, WA See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Roche Harbor, San Juan Island, WA

Today
High : 69ºF
S wind around 6 kt. Sunny. Waves 1 ft or less.
Tonight
Low : 55ºF
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Monday
High : 71ºF
Variable winds less than 5 kt becoming N 5 to 7 kt in the afternoon. Sunny. Waves 1 ft or less.
Monday Night
Low : 57ºF
N wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.
Tuesday
High : 74ºF
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Tuesday Night
Low : 56ºF
Variable winds less than 5 kt becoming SSW 5 to 7 kt in the evening. Partly cloudy. Waves 1 ft or less.
Wednesday
High : 71ºF
S wind around 7 kt. Mostly sunny. Waves 1 ft or less.
Wednesday Night
Low : 54ºF
S wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Waves 1 ft or less.
Thursday
High : 67ºF
Variable winds less than 5 kt becoming S 5 to 7 kt in the morning. Partly sunny. Waves 1 ft or less.

NOAA Buoy Data Near Roche Harbor, San Juan Island, WA See Map

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    Featured Local Businesses

    Roche Harbor Marina

    Roche Harbor Resort and Marina

    Wind Speed Forecast for Roche Harbor, San Juan Island, WA

    SundayMondayTuesday
    Wind Speed (MPH) 673113672112
    7pm11pm3am7am11am3pm7pm11pm3am7am11am3pm
    MPH 673113672112
    DIR SSSESSEENENNNNNNWNN

    Current Weather Conditions In Roche Harbor, San Juan Island, WA

    As Of: 26 minutes ago

    • 63ºF
    • 63ºF
    • 6mph
    • 0º (S)
    • 6mph
    • Cloudy
    • 10mi
    • 30.12"
    • 77%
    • 0ºF

    The weather right now in Roche Harbor, San Juan Island, WA is Cloudy. The current temperature is 63°F, and the expected high and low for today, Sunday, August 23, 2026, are 70° high temperature and 54°F low temperature. The wind is currently blowing at 6 miles per hour, and coming from the South. The wind is gusting to 6 mph. With the wind and the atmosphere the temperature feels like 63° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 77 percent, and air pressure at 30.12 in. Visibility is 10 nautical miles. There are no current weather alert(s).