Roche Harbor, San Juan Island, WA Weather Forecast and Current Conditions
| Day | Sky | High / Low | Precip | Wind | Humidity | |
|---|---|---|---|---|---|---|
|
Sat Aug 1 |
 |
Showers Early Close Hourly |
-º / 54º | 34% | WSW 11 mph | 62% |
| 4pm |  |
Mostly Cloudy | 68º | 23% | WSW 12 mph | 48% |
| 5pm |  |
Partly Cloudy | 68º | 20% | WSW 11 mph | 49% |
| 6pm | |
Partly Cloudy | 66º | 1% | WSW 10 mph | 52% |
| 7pm | |
Partly Cloudy | 63º | 2% | WSW 11 mph | 55% |
| 8pm | |
Partly Cloudy | 62º | 1% | WSW 11 mph | 57% |
| 9pm |  |
Mostly Clear | 60º | 2% | WSW 9 mph | 61% |
| 10pm |  |
Partly Cloudy | 59º | 2% | WSW 8 mph | 63% |
| 11pm |  |
Clear | 58º | 4% | WSW 7 mph | 66% |
|
Sun Aug 2 |
 |
Mostly Sunny View Hourly |
68º / 55º | 8% | ENE 4 mph | 57% |
| 12am | |
Partly Cloudy | 57º | 5% | WSW 6 mph | 69% |
| 1am | |
Partly Cloudy | 57º | 5% | WSW 6 mph | 70% |
| 2am | |
Partly Cloudy | 57º | 7% | WSW 5 mph | 70% |
| 3am | |
Partly Cloudy | 56º | 24% | WSW 4 mph | 72% |
| 4am |  |
Mostly Cloudy | 56º | 20% | WSW 4 mph | 73% |
| 5am | |
Mostly Cloudy | 56º | 9% | WSW 4 mph | 74% |
| 6am | |
Partly Cloudy | 55º | 9% | WSW 4 mph | 76% |
| 7am | |
Partly Cloudy | 57º | 6% | SW 4 mph | 73% |
| 8am | |
Partly Cloudy | 59º | 9% | SW 4 mph | 68% |
| 9am | |
Partly Cloudy | 60º | 6% | SW 3 mph | 65% |
| 10am | |
Partly Cloudy | 62º | 6% | WSW 2 mph | 62% |
| 11am | |
Partly Cloudy | 63º | 7% | NNW 2 mph | 59% |
| 12pm | |
Partly Cloudy | 65º | 1% | NE 2 mph | 54% |
| 1pm | |
Mostly Sunny | 65º | 1% | ENE 2 mph | 52% |
| 2pm | |
Mostly Sunny | 67º | 1% | NE 2 mph | 50% |
| 3pm | |
Mostly Sunny | 67º | 1% | ENE 2 mph | 49% |
| 4pm | |
Mostly Sunny | 68º | 3% | NE 2 mph | 47% |
| 5pm | |
Mostly Sunny | 67º | 7% | ENE 2 mph | 49% |
| 6pm | |
Partly Cloudy | 66º | 1% | SE 2 mph | 50% |
| 7pm |  |
Sunny | 65º | 2% | S 2 mph | 53% |
| 8pm | |
Sunny | 63º | 2% | S 2 mph | 56% |
| 9pm | |
Clear | 60º | 4% | S 2 mph | 63% |
| 10pm | |
Clear | 59º | 5% | S 2 mph | 66% |
| 11pm | |
Clear | 58º | 6% | S 2 mph | 69% |
|
Mon Aug 3 |
|
Sunny View Hourly |
73º / 56º | 7% | N 7 mph | 55% |
| 12am | |
Clear | 57º | 6% | N 1 mph | 71% |
| 1am | |
Clear | 56º | 7% | N 0 mph | 72% |
| 2am | |
Clear | 56º | 6% | N 1 mph | 73% |
| 3am | |
Clear | 56º | 7% | N 1 mph | 73% |
| 4am | |
Clear | 57º | 6% | N 2 mph | 74% |
| 5am | |
Clear | 56º | 7% | N 3 mph | 75% |
| 6am | |
Sunny | 56º | 7% | NNW 4 mph | 76% |
| 7am | |
Sunny | 58º | 7% | NNW 5 mph | 74% |
| 8am | |
Mostly Sunny | 60º | 6% | N 6 mph | 69% |
| 9am | |
Sunny | 62º | 5% | N 6 mph | 66% |
| 10am | |
Sunny | 64º | 4% | N 7 mph | 62% |
| 11am | |
Sunny | 65º | 3% | N 7 mph | 59% |
| 12pm | |
Sunny | 67º | 2% | N 7 mph | 55% |
| 1pm | |
Sunny | 68º | 1% | N 7 mph | 51% |
| 2pm | |
Sunny | 70º | 1% | N 7 mph | 48% |
| 3pm | |
Sunny | 71º | 1% | N 6 mph | 46% |
|
Tue Aug 4 |
|
Sunny | 75º / 59º | 5% | N 8 mph | 56% |
|
Wed Aug 5 |
|
Sunny | 75º / 59º | 5% | N 7 mph | 56% |
|
Thu Aug 6 |
|
Sunny | 74º / 59º | 5% | NNE 4 mph | 58% |
|
Fri Aug 7 |
|
Sunny | 75º / 57º | 5% | ESE 5 mph | 57% |
|
Sat Aug 8 |
|
Sunny | 72º / 57º | 5% | SSE 4 mph | 61% |
-
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
Weather Radar for Roche Harbor, San Juan Island, WA See Radar
* Playback displays weather for the past 6 hours.
NOAA Weather Marine Forecast for Roche Harbor, San Juan Island, WA
This Afternoon
High : 70ºF
SW wind around 14 kt. Sunny. Waves 1 ft or less.
SW wind around 14 kt. Sunny. Waves 1 ft or less.
Tonight
Low : 54ºF
SW wind 5 to 11 kt. Mostly clear. Waves 1 ft or less.
SW wind 5 to 11 kt. Mostly clear. Waves 1 ft or less.
Sunday
High : 67ºF
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Sunday Night
Low : 55ºF
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Monday
High : 71ºF
NNW wind around 6 kt. Sunny. Waves 1 ft or less.
NNW wind around 6 kt. Sunny. Waves 1 ft or less.
Monday Night
Low : 58ºF
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Tuesday
High : 74ºF
N wind 5 to 7 kt. Sunny. Waves 1 ft or less.
N wind 5 to 7 kt. Sunny. Waves 1 ft or less.
Tuesday Night
Low : 58ºF
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Wednesday
High : 73ºF
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
NOAA Buoy Data Near Roche Harbor, San Juan Island, WA See Map
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Wind Speed Forecast for Roche Harbor, San Juan Island, WA
| Saturday | Sunday | Monday | ||||||||||
| Wind Speed (MPH) | 12 | 11 | 6 | 4 | 4 | 2 | 2 | 2 | 1 | 2 | 6 | 7 |
| 11pm | 3am | 7am | 11am | 3pm | 7pm | 11pm | 3am | 7am | 11am | 3pm | 7pm | |
| MPH | 12 | 11 | 6 | 4 | 4 | 2 | 2 | 2 | 1 | 2 | 6 | 7 |
| DIR | WSW | WSW | WSW | WSW | SW | NE | NE | S | N | N | N | N |
Current Weather Conditions In Roche Harbor, San Juan Island, WA
As Of: 1 minute ago
- 68ºF
- 68ºF
- 12mph
- 0º (WSW)
- 18mph
- Mostly Cloudy
- 10mi
- 30.10"
- 48%
- 0ºF
The weather right now in Roche Harbor, San Juan Island, WA is Mostly Cloudy. The current temperature is 68°F, and the expected high and low for today, Saturday, August 1, 2026, are -° high temperature and 54°F low temperature. The wind is currently blowing at 12 miles per hour, and coming from the West Southwest. The wind is gusting to 18 mph. With the wind and the atmosphere the temperature feels like 68° Fahrenheit. Expected precipitation is 23 percent, with current humidity at 48 percent, and air pressure at 30.1 in. Visibility is 10 nautical miles. There are no current weather alert(s).
