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

Day Sky High / Low Precip Wind Humidity
Sun
Jul 12 		Sunny
Close Hourly 		66º / 51º 1% SSE 5 mph 45%
2pm Sunny 65º 1% SSE 4 mph 46%
3pm Sunny 66º 1% SE 4 mph 45%
4pm Sunny 66º 1% SE 3 mph 44%
5pm Sunny 66º 1% SSE 2 mph 45%
6pm Mostly Sunny 65º 1% SSE 2 mph 47%
7pm Partly Cloudy 64º 1% SSW 1 mph 48%
8pm Partly Cloudy 62º 1% SW 1 mph 51%
9pm Partly Cloudy 60º 2% SW 1 mph 56%
10pm Mostly Clear 58º 3% SSE 0 mph 59%
11pm Clear 57º 4% ENE 0 mph 63%
Mon
Jul 13 		Mostly Sunny
View Hourly 		71º / 54º 6% N 5 mph 52%
12am Clear 56º 5% NNE 0 mph 66%
1am Clear 55º 6% NE 0 mph 68%
2am Clear 54º 6% NE 0 mph 70%
3am Clear 54º 6% NE 0 mph 70%
4am Clear 53º 6% ENE 0 mph 73%
5am Clear 52º 6% NE 0 mph 76%
6am Sunny 53º 7% NNE 0 mph 75%
7am Sunny 57º 6% N 1 mph 67%
8am Sunny 59º 5% N 1 mph 63%
9am Sunny 61º 4% N 3 mph 60%
10am Sunny 62º 3% NNE 4 mph 57%
11am Sunny 64º 3% NNE 4 mph 55%
12pm Sunny 65º 2% NNE 4 mph 52%
1pm Sunny 67º 2% N 4 mph 48%
2pm Mostly Sunny 67º 2% N 4 mph 47%
3pm Sunny 68º 1% N 3 mph 45%
4pm Sunny 69º 1% N 2 mph 43%
5pm Sunny 69º 1% NNW 2 mph 43%
6pm Partly Cloudy 69º 1% NNW 2 mph 44%
7pm Sunny 67º 1% NW 1 mph 46%
8pm Sunny 66º 2% N 0 mph 49%
9pm Sunny 62º 3% E 0 mph 55%
10pm Partly Cloudy 60º 3% ESE 0 mph 57%
11pm Mostly Clear 60º 3% E 0 mph 59%
Tue
Jul 14 		Sunny
View Hourly 		73º / 56º 5% N 3 mph 51%
12am Clear 58º 4% E 0 mph 63%
1am Clear 58º 4% E 0 mph 64%
2am Clear 57º 5% ENE 0 mph 67%
3am Clear 56º 5% ENE 0 mph 69%
4am Clear 56º 6% ENE 0 mph 71%
5am Clear 55º 6% ENE 0 mph 72%
6am Sunny 55º 6% ENE 0 mph 72%
7am Sunny 59º 5% NE 0 mph 65%
8am Sunny 61º 3% NE 0 mph 61%
9am Sunny 63º 3% NE 1 mph 59%
10am Sunny 64º 3% NNE 2 mph 55%
11am Sunny 66º 3% NNE 2 mph 53%
12pm Sunny 67º 3% NNE 2 mph 50%
1pm Sunny 68º 3% NNE 2 mph 49%
Wed
Jul 15 		Partly Cloudy 71º / 57º 6% SE 3 mph 55%
Thu
Jul 16 		Partly Cloudy 71º / 57º 24% ESE 6 mph 58%
Fri
Jul 17 		Mostly Sunny 68º / 57º 24% SSE 8 mph 63%
Sat
Jul 18 		Sunny 71º / 58º 10% NNE 7 mph 61%
Sun
Jul 19 		Sunny 72º / 59º 13% N 6 mph 58%

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

This Afternoon
High : 67ºF
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Tonight
Low : 54ºF
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Monday
High : 71ºF
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Monday Night
Low : 56ºF
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Tuesday
High : 74ºF
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Tuesday Night
Low : 57ºF
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Wednesday
High : 74ºF
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Wednesday Night
Low : 56ºF
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Thursday
High : 71ºF
Variable winds less than 5 kt becoming S around 6 kt in the morning. A chance of rain. 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) 420004420002
    9pm1am5am9am1pm5pm9pm1am5am9am1pm5pm
    MPH 420004420002
    DIR SSESSESSENENNENNENNNWESEENEENENNE

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

    As Of: 2 minutes ago

    • 65ºF
    • 65ºF
    • 4mph
    • 0º (SSE)
    • 4mph
    • Sunny
    • 10mi
    • 30.15"
    • 46%
    • 0ºF

    The weather right now in Roche Harbor, San Juan Island, WA is Sunny. The current temperature is 65°F, and the expected high and low for today, Sunday, July 12, 2026, are 66° high temperature and 51°F low temperature. The wind is currently blowing at 4 miles per hour, and coming from the South Southeast. The wind is gusting to 4 mph. With the wind and the atmosphere the temperature feels like 65° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 46 percent, and air pressure at 30.15 in. Visibility is 10 nautical miles. There are no current weather alert(s).