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 — and sunset is at 07:14 PM.

	Days 1–4 Weather Summary Mostly dry. Cool air temperatures (max 18°C on Mon afternoon, min 10°C on Tue night). Wind will be generally light.											Days 5–7 Weather Summary Heavy rain (total 23mm), heaviest during Thu afternoon. Warm air temperatures (max 20°C on Sat afternoon, min 7°C on Fri night). Wind will be generally light.									Days 8–10 Weather Summary Light rain (total 5mm), mostly falling on Wed morning. Very mild (max 19°C on Tue afternoon, min 10°C on Mon night). Wind will be generally light.									Days 11–13 Weather Summary Light rain (total 5mm), mostly falling on Wed afternoon. Warm (max 24°C on Sat afternoon, min 7°C on Fri morning). Wind will be generally light.									Days 14–17 Weather Summary Mostly dry. Warm (max 27°C on Tue afternoon, min 11°C on Sun night). Wind will be generally light.
	Mon 21		Tuesday 22			Wednesday 23			Thursday 24			Friday 25			Saturday 26			Sunday 27			Monday 28			Tuesday 29			Wednesday 30			Thursday 1			Friday 2			Saturday 3			Sunday 4			Monday 5			Tuesday 6
	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	11:39AM1.78m	10:43PM1.99m		12:22PM1.92m	11:43PM2.09m		12:58PM2.06m	00:35AM2.18m		1:29PM2.19m	1:21AM2.24m		1:58PM2.32m	2:06AM2.27m		2:26PM2.43m	2:51AM2.26m		2:54PM2.54m	3:36AM2.21m		3:23PM2.62m	4:24AM2.12m		3:54PM2.66m		5:15AM2.00m	4:31PM2.65m		6:12AM1.86m		5:14PM2.58m	7:20AM1.74m		6:07PM2.44m	8:37AM1.70m		7:17PM2.27m	9:54AM1.77m		8:48PM2.15m	10:58AM1.93m
Low Tide		5:28PM0.83m	6:26AM0.07m		6:26PM0.67m	7:07AM0.02m		7:15PM0.49m	7:43AM-0.01m		7:58PM0.31m	8:16AM0.01m		8:39PM0.14m	8:48AM0.05m		9:18PM-0.02m	9:20AM0.14m		9:57PM-0.15m	9:52AM0.25m		10:37PM-0.24m	10:27AM0.37m		11:20PM-0.27m		11:04AM0.51m	00:08AM-0.24m		11:48AM0.65m	1:05AM-0.16m		12:42PM0.78m	2:15AM-0.06m		1:56PM0.88m	3:34AM-0.01m		3:28PM0.88m	4:50AM-0.01m		4:54PM0.75m
Wave Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	some clouds	some clouds	clear	clear	some clouds	cloudy	some clouds	some clouds	cloudy	mod rain	rain shwrs	rain shwrs	clear	clear	clear	some clouds	mod rain	light rain	cloudy	some clouds	some clouds	some clouds	some clouds	cloudy	cloudy	light rain	light rain	rain shwrs	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
km/h	W	WNW	W	W	ESE	NNE	WNW	NE	E	WSW	W	W	WNW	ENE	E	W	SE	ESE	W	SW	SSW	WNW	E	ESE	W	SE	ESE	WSW	SSE	WSW	WNW	E	E	E	E	E	ENE	E	WNW	WNW	ENE	ENE	NE	E	E	WNW	SSE
mm	—	—	—	—	—	—	—	—	—	7	7	1	—	—	—	—	6	2	—	—	—	—	—	—	—	1	4	5	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
max °C	18	15	16	18	12	14	16	12	15	12	11	14	16	12	14	20	12	10	14	13	14	17	12	16	19	14	12	14	12	14	16	12	14	21	16	18	25	17	18	22	13	19	25	17	22	27	19
Moonrise	5:14	—	—	5:37	—	—	5:57	—	—	6:16	—	—	6:33	—	—	6:51	—	—	7:11	—	—	7:34	—	—	8:04	—	—	8:44	—	—	—	9:36	—	—	10:42	—	—	11:58	—	—	—	1:18	—	—	2:38	—	—
Moonset	—	—	2:23	—	—	3:34	—	—	4:44	—	—	5:56	—	—	7:09	—	—	8:25	—	—	9:43	—	—	11:04	—	—	12:25	—	—	1:40	—	—	2:44	—	—	—	3:35	—	—	4:13	—	—	4:41	—	—	5:04	—
	—	—	7:00	—	—	7:01	—	—	7:03	—	—	7:03	—	—	7:05	—	—	7:07	—	—	7:07	—	—	7:09	—	—	7:09	—	—	7:11	—	—	7:13	—	—	7:13	—	—	7:16	—	—	7:16	—	—	7:18	—	—
	7:14	—	—	7:12	—	—	7:09	—	—	7:07	—	—	7:06	—	—	7:04	—	—	7:01	—	—	7:00	—	—	6:58	—	—	6:55	—	—	6:54	—	—	6:52	—	—	6:51	—	—	6:49	—	—	6:46	—	—	6:45	—
	Today's sea temperature in Knappa, Knappa Slough, Columbia River is 19.2°C (Statistics for 21 Sep 1981-2005 – mean: 14.5 max: 16.9 min: 12.6°C)