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 05:22 AM and sunset is at 09:07 PM.

	Days 1–3 Weather Summary Mostly dry. Warm air temperatures (max 26°C on Mon afternoon, min 10°C on Wed night). Wind will be generally light.									Days 4–6 Weather Summary Mostly dry. Warm air temperatures (max 22°C on Thu afternoon, min 11°C on Thu night). Wind will be generally light.									Days 7–9 Weather Summary Mostly dry. Warm (max 23°C on Mon afternoon, min 10°C on Sun night). Wind will be generally light.									Days 10–12 Weather Summary Light rain (total 3mm), mostly falling on Wed morning. Very mild (max 19°C on Fri afternoon, min 10°C on Fri night). Wind will be generally light.									Days 13–16 Weather Summary Mostly dry. Warm (max 31°C on Sun afternoon, min 11°C on Tue night). Wind will be generally light.
	Monday 15			Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thursday 25			Friday 26			Saturday 27			Sunday 28			Monday 29			Tue 30
	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		3:42PM2.11m	2:36AM2.86m		4:33PM2.16m	3:30AM2.78m			5:22PM2.20m			6:10PM2.24m	5:22AM2.47m		6:58PM2.29m	6:22AM2.24m		7:45PM2.33m	7:29AM2.02m		8:32PM2.38m	8:41AM1.84m		9:18PM2.42m	9:55AM1.74m		10:03PM2.45m		11:05AM1.73m	10:46PM2.47m		12:09PM1.77m	11:28PM2.47m		1:05PM1.84m	00:08AM2.47m		1:54PM1.90m	00:47AM2.47m		2:39PM1.95m	1:26AM2.47m		3:20PM1.98m
Low Tide	9:39AM-0.55m		9:17PM0.77m	10:29AM-0.55m		10:14PM0.74m		11:18AM-0.49m	11:12PM0.70m		12:06PM-0.38m	00:10AM0.65m		12:52PM-0.23m	1:11AM0.60m		1:38PM-0.05m	2:16AM0.54m		2:24PM0.14m	3:23AM0.44m		3:13PM0.33m	4:30AM0.31m		4:04PM0.50m		5:32AM0.16m	4:57PM0.64m		6:27AM0.02m		5:49PM0.75m	7:17AM-0.09m		6:40PM0.81m	8:01AM-0.17m		7:28PM0.85m	8:43AM-0.21m		8:14PM0.87m	9:21AM-0.23m
Wave Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	some clouds	some clouds	clear	cloudy	clear	some clouds	clear	clear	clear	some clouds	cloudy	some clouds	clear	clear	some clouds	some clouds	clear	some clouds	some clouds	clear	clear	some clouds	clear	some clouds	clear	clear	some clouds	light rain	some clouds	rain shwrs	light rain	some clouds	cloudy	cloudy	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	some clouds	cloudy	cloudy
km/h	W	W	W	WNW	WNW	NW	WNW	W	W	NNE	WNW	W	W	W	WSW	W	W	W	W	W	SSW	WNW	W	W	W	W	W	W	WNW	WNW	WNW	WNW	WNW	WNW	W	WNW	W	W	W	ENE	WNW	WSW	W	W	W	W	WNW
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	—	1	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	25	26	17	15	17	13	16	18	14	20	22	17	19	20	15	17	18	14	15	17	15	20	23	17	18	19	14	14	16	14	13	16	14	15	19	15	21	24	19	27	31	23	23	24	17	16	17
Moonrise	5:27	—	—	6:45	—	—	8:10	—	—	9:33	—	—	10:52	—	—	12:07	—	—	1:18	—	—	2:27	—	—	—	3:35	—	—	4:43	—	—	5:51	—	—	6:57	—	—	7:58	—	—	8:52	—	—	—	9:37	—	—
Moonset	—	—	10:31	—	—	11:16	—	—	11:49	—	—	—	12:13	—	—	12:33	—	—	12:51	—	—	1:08	—	—	1:25	—	—	1:43	—	—	2:05	—	—	2:32	—	—	3:05	—	—	3:48	—	—	4:40	—	—	5:40	—
	5:22	—	—	5:22	—	—	5:22	—	—	5:22	—	—	5:22	—	—	5:22	—	—	5:22	—	—	5:22	—	—	5:22	—	—	5:22	—	—	5:22	—	—	5:24	—	—	5:24	—	—	5:24	—	—	5:24	—	—	5:26	—
	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:07	—	—	9:08	—	—	9:08	—	—	9:08	—	—	9:08	—	—	9:08	—	—	9:08	—	—	9:09	—	—	9:09	—	—	9:08	—	—	9:08	—	9:08
	Today's sea temperature in Knappa, Knappa Slough, Columbia River is 17.0° C (Statistics for 15 Jun 1981-2005 – mean: 13.5 max: 15.3 min: 12.1°C)