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 07:58 AM and sunset is at 04:16 PM.
Days 1–3 Weather SummaryHeavy rain (total 54mm), heaviest during Tue afternoon. Cool air temperatures (max 13°C on Mon morning, min 6°C on Tue morning). Winds increasing (light winds from the SSW on Tue morning, strong winds from the WSW by Tue night). | Days 4–6 Weather SummaryHeavy rain (total 22mm), heaviest during Thu morning. Low air temperatures (max 8°C on Thu afternoon, min 5°C on Fri night). Winds decreasing (strong winds from the SE on Thu morning, light winds from the WSW by Thu night). | Days 7–9 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Mild temperatures (max 5°C on Sun morning, min 1°C on Mon morning). Wind will be generally light. | Days 10–12 Weather SummaryHeavy rain (total 56mm), heaviest during Fri night. Mild temperatures (max 9°C on Wed night, min 4°C on Wed morning). Winds decreasing (near gales from the SE on Wed night, light winds from the S by Thu night). | |||||||||||||||||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | |||||||||||||||||||||||||
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 | 12:23PM2.32m | 4:19AM2.16m | 12:38PM2.29m | 5:02AM2.35m | 12:54PM2.26m | 5:40AM2.48m | 1:15PM2.24m | 6:13AM2.55m | 1:43PM2.22m | 6:45AM2.59m | 2:17PM2.19m | 7:16AM2.59m | 2:53PM2.14m | 7:48AM2.59m | 3:30PM2.07m | 8:20AM2.58m | 4:13PM1.96m | 8:51AM2.58m | 5:16PM1.81m | 9:20AM2.57m | 6:46PM1.63m | 9:48AM2.56m | 8:32PM1.47m | |||||||||||||
Low Tide | 7:05AM1.71m | 8:20PM0.05m | 8:13AM1.93m | 8:48PM-0.14m | 9:17AM2.06m | 9:17PM-0.29m | 10:17AM2.13m | 9:49PM-0.41m | 11:11AM2.15m | 10:22PM-0.48m | 11:59AM2.14m | 10:58PM-0.51m | 12:45PM2.10m | 11:35PM-0.50m | 1:36PM2.05m | 00:13AM-0.43m | 2:36PM1.95m | 00:51AM-0.30m | 3:36PM1.80m | 1:30AM-0.08m | 4:21PM1.57m | 2:09AM0.21m | 4:57PM1.28m | 2:50AM0.59m | ||||||||||||
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rain shwrs | rain shwrs | rain shwrs | light rain | heavy rain | rain shwrs | some clouds | some clouds | cloudy | light rain | rain shwrs | some clouds | light rain | light rain | light rain | light rain | light rain | mod rain | cloudy | some clouds | some clouds | light rain | rain shwrs | clear | clear | some clouds | light rain | light rain | light rain | light rain | light rain | rain shwrs | rain shwrs | light rain | light rain | heavy rain | |
km/h | ||||||||||||||||||||||||||||||||||||
3 | 1 | 2 | 4 | 20 | 24 | — | — | — | 5 | 2 | — | 2 | 1 | 3 | 1 | 1 | 7 | — | — | — | 1 | 1 | — | — | — | 2 | 5 | 3 | 1 | 1 | 3 | 5 | 2 | 1 | 25 | |
max°C | 13 | 11 | 9 | 8 | 9 | 10 | 8 | 8 | 7 | 7 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 4 | 3 | 2 | 4 | 4 | 3 | 4 | 4 | 5 | 8 | 9 | 9 | 7 | 7 | 6 | 8 | 7 |
Moonrise | 3:55 | — | — | 5:05 | — | — | 6:14 | — | — | 7:20 | — | — | 8:20 | — | — | 9:10 | — | — | 9:49 | — | — | 10:19 | — | — | 10:42 | — | — | 11:01 | — | — | 11:17 | — | — | 11:32 | — | — |
Moonset | 1:24 | — | — | 1:44 | — | — | 2:12 | — | — | 2:47 | — | — | — | 3:34 | — | — | 4:32 | — | — | 5:39 | — | — | 6:52 | — | — | 8:06 | — | — | — | 9:21 | — | — | 10:35 | — | — | 11:51 |
 | 7:58 | — | — | 7:58 | — | — | 7:58 | — | — | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — | 8:02 | — | — | 8:02 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — | 8:03 | — | — |
 | — | 4:16 | — | — | 4:16 | — | — | 4:16 | — | — | 4:17 | — | — | 4:17 | — | — | 4:17 | — | — | 4:19 | — | — | 4:19 | — | — | 4:20 | — | — | 4:21 | — | — | 4:21 | — | — | 4:22 | — |
Today's sea temperature in Roche Harbor, San Juan Island is 9.5° C (Statistics for 15 Dec 1981-2005 – mean: 8.4 max: 9.4 min: 6.6°C) | ||||||||||||||||||||||||||||||||||||
Nearest