Roche Harbor, San Juan Island Sea Conditions table showing wave height, swell direction and period.
High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at 08:03 AM and sunset is at 04:21 PM.
Days 1–3 Weather SummaryLight rain (total 8mm), mostly falling on Thu afternoon. Low air temperatures (max 7°C on Fri morning, min 1°C on Sat morning). Winds increasing (calm on Thu night, fresh winds from the W by Fri morning). | Days 4–6 Weather SummaryMostly dry. Low air temperatures (max 6°C on Tue night, min 3°C on Sun morning). Wind will be generally light. | Days 7–9 Weather SummarySome drizzle, heaviest during Fri night. Mild temperatures (max 8°C on Thu afternoon, min 6°C on Wed morning). Winds increasing (calm on Wed morning, strong winds from the W by Fri night). | Days 10–12 Weather SummaryModerate rain (total 16mm), heaviest on Sun night. Mild temperatures (max 8°C on Mon morning, min 4°C on Sun night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Thursday 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 31 | Thursday 1 | Friday 2 | Saturday 3 | Sunday 4 | Monday 5 | |||||||||||||||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
Wave Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
High Tide | 9:20AM2.57m | 6:46PM1.63m | 9:48AM2.56m | 8:32PM1.47m | 10:14AM2.56m | 10:38PM1.42m | 10:39AM2.57m | 1:00AM1.59m | 11:04AM2.60m | 2:47AM1.93m | 11:32AM2.63m | 3:52AM2.27m | 12:05PM2.65m | 4:41AM2.55m | 12:42PM2.64m | 5:22AM2.70m | 1:39PM2.61m | 6:01AM2.77m | 2:42PM2.53m | 6:39AM2.79m | 3:46PM2.42m | 7:15AM2.76m | 4:49PM2.25m | |||||||||||||
Low Tide | 4:21PM1.57m | 2:09AM0.21m | 4:57PM1.28m | 2:50AM0.59m | 5:34PM0.92m | 3:36AM1.01m | 6:13PM0.52m | 4:34AM1.44m | 6:54PM0.11m | 5:49AM1.83m | 7:37PM-0.26m | 7:11AM2.10m | 8:21PM-0.56m | 8:29AM2.27m | 9:08PM-0.75m | 9:36AM2.28m | 9:56PM-0.83m | 10:38AM2.20m | 10:44PM-0.80m | 11:37AM2.05m | 11:30PM-0.68m | 12:37PM1.87m | 00:15AM-0.46m | |||||||||||||
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 |  |  |  | | | | |  |  | | | | | | | |  | | | | | | | | | | | | | | | | | |  | |
some clouds | light rain | rain shwrs | rain shwrs | rain shwrs | rain shwrs | some clouds | some clouds | some clouds | cloudy | cloudy | some clouds | some clouds | some clouds | some clouds | some clouds | cloudy | cloudy | cloudy | cloudy | some clouds | cloudy | cloudy | cloudy | cloudy | cloudy | rain shwrs | cloudy | light rain | some clouds | cloudy | cloudy | rain shwrs | cloudy | light rain | light rain | |
km/h | ||||||||||||||||||||||||||||||||||||
— | 4 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | 9 | — | 1 | 5 | |
max°C | 6 | 4 | 6 | 7 | 6 | 5 | 2 | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 4 | 5 | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 7 | 7 | 8 | 7 | 6 | 6 | 7 | 7 | 7 | 8 | 7 | 6 |
Moonrise | 11:17 | — | — | 11:32 | — | — | 11:46 | — | — | 12:03 | — | — | 12:23 | — | — | 12:49 | — | — | 1:25 | — | — | 2:16 | — | — | — | 3:25 | — | — | 4:47 | — | — | 6:13 | — | — | 7:38 | — |
Moonset | — | — | 10:35 | — | — | 11:51 | — | — | — | 1:09 | — | — | 2:30 | — | — | 3:57 | — | — | 5:25 | — | — | 6:49 | — | — | 7:59 | — | — | 8:51 | — | — | 9:28 | — | — | 9:54 | — | — |
 | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — |
 | — | 4:21 | — | — | 4:22 | — | — | 4:22 | — | — | 4:22 | — | — | 4:23 | — | — | 4:24 | — | — | 4:25 | — | — | 4:27 | — | — | 4:28 | — | — | 4:29 | — | — | 4:30 | — | — | 4:31 | — |
Today's sea temperature in Roche Harbor, San Juan Island is 9.1° C (Statistics for 25 Dec 1981-2005 – mean: 8.1 max: 9.0 min: 6.6°C) | ||||||||||||||||||||||||||||||||||||
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