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

Day	Sky	High / Low	Precip	Wind	Humidity
Fri Oct 2	Mostly Cloudy Close Hourly	-º / 53º	20%	N 5 mph	97%
11pm	Partly Cloudy	56º	4%	N 4 mph	94%
Sat Oct 3	Partly Cloudy View Hourly	64º / 51º	21%	N 6 mph	83%
12am	Partly Cloudy	56º	5%	N 4 mph	95%
1am	Cloudy	56º	3%	N 5 mph	95%
2am	Cloudy	55º	3%	NNW 4 mph	97%
3am	Cloudy	55º	3%	N 4 mph	97%
4am	Cloudy	55º	3%	NNW 5 mph	97%
5am	Cloudy	55º	19%	NNW 5 mph	98%
6am	Mostly Cloudy	54º	21%	NNW 4 mph	99%
7am	Partly Cloudy	54º	21%	NNW 5 mph	99%
8am	Partly Cloudy	54º	21%	NNW 4 mph	99%
9am	Partly Cloudy	57º	20%	N 5 mph	93%
10am	Partly Cloudy	58º	21%	N 5 mph	89%
11am	Partly Cloudy	59º	9%	N 6 mph	85%
12pm	Partly Cloudy	60º	8%	N 6 mph	81%
1pm	Mostly Sunny	61º	5%	N 6 mph	77%
2pm	Sunny	62º	4%	NNE 6 mph	74%
3pm	Sunny	63º	3%	NNE 6 mph	73%
4pm	Sunny	63º	3%	NNE 5 mph	71%
5pm	Sunny	62º	3%	N 5 mph	73%
6pm	Sunny	61º	4%	N 3 mph	76%
7pm	Clear	58º	6%	N 2 mph	82%
8pm	Clear	56º	7%	N 1 mph	86%
9pm	Clear	55º	7%	NNW 0 mph	87%
10pm	Clear	55º	7%	NNW 0 mph	89%
11pm	Clear	54º	7%	NNW 0 mph	90%
Sun Oct 4	Partly Cloudy View Hourly	64º / 50º	20%	NNE 3 mph	80%
12am	Clear	54º	7%	NNW 0 mph	91%
1am	Clear	54º	7%	NNW 0 mph	90%
2am	Clear	53º	7%	NNW 0 mph	92%
3am	Clear	53º	7%	N 0 mph	93%
4am	Clear	53º	7%	NNW 0 mph	94%
5am	Clear	53º	7%	NNW 0 mph	94%
6am	Mostly Clear	52º	20%	NNW 1 mph	96%
7am	Mostly Clear	52º	20%	NNW 1 mph	96%
8am	Partly Cloudy	54º	20%	NNW 1 mph	93%
9am	Partly Cloudy	56º	20%	N 1 mph	89%
10am	Partly Cloudy	58º	6%	N 2 mph	85%
11am	Partly Cloudy	59º	5%	N 2 mph	81%
12pm	Partly Cloudy	60º	4%	NNE 2 mph	78%
1pm	Partly Cloudy	62º	4%	NNE 2 mph	76%
2pm	Partly Cloudy	63º	3%	NNE 2 mph	72%
3pm	Partly Cloudy	63º	3%	NE 2 mph	70%
4pm	Partly Cloudy	63º	3%	NE 1 mph	70%
5pm	Partly Cloudy	63º	4%	E 0 mph	72%
6pm	Partly Cloudy	62º	5%	SE 0 mph	74%
7pm	Mostly Clear	59º	5%	SSE 1 mph	78%
8pm	Mostly Clear	57º	5%	SSE 1 mph	82%
9pm	Mostly Clear	55º	6%	SSE 1 mph	87%
10pm	Partly Cloudy	54º	6%	SE 1 mph	90%
Mon Oct 5	Partly Cloudy	63º / 51º	20%	SE 3 mph	84%
Tue Oct 6	AM Clouds/PM Sun	61º / 51º	20%	N 4 mph	86%
Wed Oct 7	Partly Cloudy	62º / 51º	7%	N 5 mph	80%
Thu Oct 8	Partly Cloudy	62º / 52º	7%	NNE 4 mph	80%
Fri Oct 9	AM Showers	60º / 50º	36%	SW 9 mph	77%

Buoy Data
For Roche Harbor, San Juan Island, WA
Wind Forecast
In Roche Harbor, San Juan Island, WA
Radar
In Roche Harbor, San Juan Island, WA
Marine Forecast
In Roche Harbor, San Juan Island, WA

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

Tonight

Low : 51ºF
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

Saturday

High : 61ºF
NNW wind around 7 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

Low : 51ºF
N wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.

Sunday

High : 61ºF
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Sunday Night

Low : 50ºF
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

Monday

High : 63ºF
Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.

Monday Night

Low : 50ºF
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

Tuesday

High : 58ºF
Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.

Tuesday Night

Low : 49ºF
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

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

As Of: 16 minutes ago

Temperature: 56ºF
Feels Like: 56ºF

Wind Speed: 4mph
Direction: 0º (N)
Gusts: 4mph

Cloud Cover: Partly Cloudy
Visibility: 7mi

Pressure: 30.13"
Humidity: 94%
Dew Point: 0ºF

The weather right now in Roche Harbor, San Juan Island, WA is Partly Cloudy. The current temperature is 56°F, and the expected high and low for today, Friday, October 2, 2026, are -° high temperature and 53°F low temperature. The wind is currently blowing at 4 miles per hour, and coming from the North. The wind is gusting to 4 mph. With the wind and the atmosphere the temperature feels like 56° Fahrenheit. Expected precipitation is 4 percent, with current humidity at 94 percent, and air pressure at 30.13 in. Visibility is 7 nautical miles. There are no current weather alert(s).