Roche Harbor, San Juan Island Sea Conditions and Tide Table

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 — and sunset is at 09:17 PM.

	Days 1–4 Weather Summary Light rain (total 7mm), mostly falling on Fri morning. Warm air temperatures (max 26°C on Tue night, min 12°C on Wed night). Wind will be generally light.											Days 5–7 Weather Summary Some drizzle, heaviest during Fri night. Cool air temperatures (max 18°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light.									Days 8–10 Weather Summary Light rain (total 2mm), mostly falling on Tue morning. Very mild (max 16°C on Mon afternoon, min 11°C on Mon night). Wind will be generally light.									Days 11–13 Weather Summary Heavy rain (total 26mm), heaviest during Sat night. Very mild (max 18°C on Thu afternoon, min 12°C on Fri morning). Mainly fresh winds.									Days 14–17 Weather Summary Moderate rain (total 10mm), heaviest on Sun night. Warm (max 22°C on Wed night, min 12°C on Sun afternoon). Wind will be generally light.
	Tue 23		Wednesday 24			Thursday 25			Friday 26			Saturday 27			Sunday 28			Monday 29			Tuesday 30			Wednesday 1			Thursday 2			Friday 3			Saturday 4			Sunday 5			Monday 6			Tuesday 7			Wednesday 8
	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	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night
Wave Height Map See all maps
High Tide	2:29PM1.51m	00:34AM2.29m		4:01PM1.77m	00:56AM2.23m			5:03PM2.01m			5:50PM2.19m			6:28PM2.30m			7:02PM2.35m			7:32PM2.37m			8:01PM2.36m			8:29PM2.35m			8:57PM2.34m	5:49AM1.78m		9:24PM2.34m	6:47AM1.64m		9:50PM2.34m	7:56AM1.49m		10:15PM2.34m	9:20AM1.35m		10:39PM2.34m		11:05AM1.30m
Low Tide		6:26PM1.28m	8:24AM0.10m		7:34PM1.59m	8:58AM-0.09m		8:46PM1.81m	9:31AM-0.25m		9:56PM1.93m	10:03AM-0.37m		10:58PM1.98m	10:37AM-0.46m		11:50PM1.97m		11:12AM-0.53m	00:34AM1.93m		11:48AM-0.56m	1:14AM1.87m		12:25PM-0.55m	1:57AM1.78m		1:02PM-0.49m	2:43AM1.67m		1:38PM-0.36m	3:33AM1.51m		2:14PM-0.15m	4:22AM1.30m		2:49PM0.13m		5:07AM1.04m	3:26PM0.48m		5:50AM0.72m	4:04PM0.88m
Wave Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	some clouds	some clouds	cloudy	clear	clear	cloudy	cloudy	light rain	light rain	some clouds	rain shwrs	some clouds	some clouds	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds	clear	rain shwrs	some clouds	cloudy	some clouds	some clouds	some clouds	cloudy	cloudy	cloudy	light rain	clear	rain shwrs	rain shwrs	some clouds	heavy rain	rain shwrs	light rain	rain shwrs	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear
km/h	NNW	N	NE	SW	SW	S	S	S	S	WSW	SW	S	S	WSW	SSE	SE	S	SSE	SSE	SW	SSE	SSE	WSW	S	SSE	ENE	NNE	NW	W	NE	N	SSW	S	W	SW	SSE	S	NW	NE	NNW	WNW	N	NNW	NW	N	NW	E
mm	—	—	—	—	—	—	—	3	4	—	1	—	—	—	—	—	—	—	—	—	2	—	—	—	—	—	—	—	—	4	—	2	1	—	17	2	2	8	—	—	—	—	—	—	—	—	—
max °C	25	26	18	25	21	13	16	15	13	18	16	13	15	16	12	14	14	14	16	16	12	16	15	13	13	13	14	18	16	13	16	16	15	17	17	12	14	12	14	16	16	15	19	20	17	21	22
Moonrise	3:39	—	—	4:50	—	—	6:00	—	—	7:08	—	—	8:10	—	—	—	9:04	—	—	9:48	—	—	10:22	—	—	10:48	—	—	11:08	—	—	11:25	—	—	11:41	—	—	11:55	—	—	—	12:10	—	—	12:26	—	—
Moonset	—	—	1:35	—	—	1:55	—	—	2:19	—	—	2:51	—	—	3:32	—	—	4:24	—	—	5:25	—	—	6:33	—	—	7:44	—	—	8:56	—	—	10:07	—	—	11:19	—	—	12:32	—	—	1:48	—	—	—	3:08	—
	—	—	5:09	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:11	—	—	5:13	—	—	5:13	—	—	5:13	—	—	5:15	—	—	5:16	—	—	5:16	—	—	5:16	—	—	5:18	—	—	5:18	—	—
	—	9:17	—	—	9:19	—	—	9:19	—	—	9:19	—	—	9:19	—	—	9:17	—	—	9:17	—	—	9:17	—	—	9:17	—	—	9:17	—	—	9:16	—	—	9:16	—	—	9:16	—	—	9:15	—	—	9:15	—	—	9:15
	Today's sea temperature in Roche Harbor, San Juan Island is 12.3° C (Statistics for 23 Jun 1981-2005 – mean: 13.9 max: 15.4 min: 11.8°C)