Knappa, Knappa Slough, Columbia River Sea Conditions and Tide Table

Knappa, Knappa Slough, Columbia River 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 06:03 AM and sunset is at 08:36 PM.

	Days 1–3 Weather Summary Mostly dry. Warm air temperatures (max 22°C on Fri afternoon, min 12°C on Fri night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm air temperatures (max 22°C on Mon afternoon, min 13°C on Mon night). Wind will be generally light.									Days 7–9 Weather Summary Mostly dry. Warm (max 24°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light.									Days 10–12 Weather Summary Mostly dry. Warm (max 22°C on Tue afternoon, min 13°C on Wed morning). Wind will be generally light.									Days 13–16 Weather Summary Mostly dry. Warm (max 22°C on Fri afternoon, min 10°C on Wed night). Wind will be generally light.
	Friday 7			Saturday 8			Sunday 9			Monday 10			Tuesday 11			Wednesday 12			Thursday 13			Friday 14			Saturday 15			Sunday 16			Monday 17			Tuesday 18			Wednesday 19			Thursday 20			Friday 21			Sat 22
	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	AM	PM
Wave Height Map See all maps
High Tide	10:09AM1.55m		9:08PM2.45m		11:29AM1.62m	10:19PM2.47m		12:35PM1.76m	11:30PM2.53m		1:29PM1.92m	00:34AM2.59m		2:16PM2.07m	1:33AM2.63m		2:59PM2.19m	2:27AM2.61m		3:39PM2.30m	3:18AM2.53m		4:16PM2.38m	4:07AM2.40m		4:51PM2.42m	4:56AM2.22m			5:25PM2.43m	5:46AM2.02m		5:57PM2.39m	6:40AM1.82m		6:32PM2.32m	7:42AM1.65m		7:11PM2.23m	8:55AM1.55m		7:59PM2.14m	10:12AM1.54m
Low Tide		3:18PM0.77m		5:23AM-0.08m	4:40PM0.84m		6:33AM-0.23m		6:00PM0.80m	7:32AM-0.35m		7:09PM0.69m	8:23AM-0.43m		8:09PM0.55m	9:09AM-0.46m		9:04PM0.41m	9:50AM-0.42m		9:55PM0.28m	10:29AM-0.32m		10:44PM0.18m		11:05AM-0.18m	11:32PM0.12m		11:39AM-0.00m	00:19AM0.10m		12:14PM0.20m	1:08AM0.11m		12:50PM0.40m	2:01AM0.14m		1:31PM0.59m	3:01AM0.17m		2:22PM0.76m	4:10AM0.16m		3:29PM0.87m
Wave Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	some clouds	clear	clear	some clouds	clear	clear	clear	clear	some clouds	clear	clear	clear	some clouds	clear	cloudy	cloudy	clear	some clouds	clear	clear	clear	clear	clear	some clouds	some clouds	clear	some clouds	some clouds	some clouds	some clouds	some clouds	cloudy	some clouds	some clouds	some clouds	some clouds	some clouds	clear	clear	clear	clear	clear	clear	clear	some clouds	some clouds	clear
km/h	W	W	W	W	WNW	W	WNW	WNW	W	WNW	WNW	W	WNW	WNW	W	WNW	WNW	WNW	NW	W	WSW	W	W	W	WNW	WNW	NW	WNW	WNW	W	W	W	NW	WNW	WNW	W	WNW	WNW	NW	NW	W	W	W	W	W	WNW	W
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	19	22	16	19	22	16	18	21	16	19	22	16	18	22	17	17	20	16	21	24	18	22	23	16	19	22	15	18	19	16	15	16	15	19	22	17	18	19	15	18	21	16	19	22	14	17	20
Moonrise	12:02	—	—	12:49	—	—	1:53	—	—	3:09	—	—	4:33	—	—	5:58	—	—	7:20	—	—	8:37	—	—	9:52	—	—	11:04	—	—	12:16	—	—	1:26	—	—	2:35	—	—	—	3:41	—	—	4:40	—	—	5:31
Moonset	—	4:48	—	—	5:59	—	—	6:56	—	—	7:39	—	—	8:12	—	—	8:36	—	—	8:57	—	—	—	9:15	—	—	9:33	—	—	9:51	—	—	10:11	—	—	10:35	—	—	11:03	—	—	11:40	—	—	—	12:25	—
	6:03	—	—	6:03	—	—	6:05	—	—	6:05	—	—	6:07	—	—	6:09	—	—	6:09	—	—	6:11	—	—	6:11	—	—	6:13	—	—	6:15	—	—	6:16	—	—	6:16	—	—	6:18	—	—	6:20	—	—	6:20	—
	—	8:36	—	—	8:34	—	—	8:32	—	—	8:30	—	—	8:30	—	—	8:28	—	—	8:27	—	—	8:24	—	—	8:22	—	—	8:22	—	—	8:20	—	—	8:17	—	—	8:16	—	—	8:15	—	—	8:13	—	—	8:10
	Today's sea temperature in Knappa, Knappa Slough, Columbia River is 21.0° C (Statistics for 07 Aug 1981-2005 – mean: 15.1 max: 17.1 min: 13.1°C)