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 07:05 AM and sunset is at 04:50 PM.

	Days 1–3 Weather Summary Heavy rain (total 27mm), heaviest during Mon afternoon. Cool air temperatures (max 14°C on Tue afternoon, min 9°C on Sun night). Wind will be generally light.									Days 4–6 Weather Summary Moderate rain (total 19mm), heaviest on Fri night. Cool air temperatures (max 17°C on Wed morning, min 10°C on Thu night). Wind will be generally light.									Days 7–9 Weather Summary Heavy rain (total 52mm), heaviest during Sat afternoon. Very mild (max 13°C on Sat afternoon, min 5°C on Mon night). Wind will be generally light.									Days 10–12 Weather Summary Mostly dry. Very mild (max 11°C on Wed morning, min 2°C on Wed night). Wind will be generally light.									Days 13–16 Weather Summary Moderate rain (total 19mm), heaviest on Mon afternoon. Very mild (max 13°C on Mon morning, min 2°C on Fri night). Wind will be generally light.
	Sunday 8			Monday 9			Tuesday 10			Wednesday 11			Thursday 12			Friday 13			Saturday 14			Sunday 15			Monday 16			Tuesday 17			Wednesday 18			Thursday 19			Friday 20			Saturday 21			Sunday 22			Mon 23
	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	12:38PM2.73m		1:50AM2.19m		1:09PM2.70m	2:34AM2.16m		1:38PM2.65m	3:16AM2.12m		2:08PM2.59m	3:59AM2.08m		2:39PM2.53m	4:42AM2.02m		3:14PM2.45m	5:27AM1.97m		3:54PM2.35m	6:16AM1.95m		4:42PM2.22m		7:07AM1.97m	5:42PM2.08m		7:57AM2.04m	7:00PM1.95m		8:44AM2.16m		8:25PM1.90m	9:27AM2.31m		9:41PM1.92m	10:05AM2.47m		10:46PM1.99m	10:42AM2.64m		11:45PM2.08m	11:19AM2.78m
Low Tide	7:09AM0.53m		8:04PM-0.23m	7:46AM0.65m		8:43PM-0.24m	8:23AM0.75m		9:19PM-0.21m	8:59AM0.84m		9:55PM-0.15m	9:36AM0.91m		10:30PM-0.07m	10:14AM0.97m		11:08PM0.02m	10:58AM1.01m		11:49PM0.12m	11:50AM1.04m		00:35AM0.22m	12:53PM1.03m		1:26AM0.30m		2:06PM0.96m	2:21AM0.38m		3:18PM0.81m	3:15AM0.44m		4:21PM0.59m	4:06AM0.50m		5:15PM0.33m	4:54AM0.57m		6:04PM0.08m	5:41AM0.64m
Wave Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

	light rain	cloudy	some clouds	light rain	heavy rain	rain shwrs	mod rain	light rain	cloudy	some clouds	some clouds	some clouds	cloudy	some clouds	rain shwrs	light rain	light rain	heavy rain	heavy rain	heavy rain	rain shwrs	light rain	light rain	some clouds	rain shwrs	rain shwrs	some clouds	some clouds	some clouds	clear	clear	clear	clear	some clouds	clear	clear	some clouds	cloudy	some clouds	clear	some clouds	some clouds	light rain	cloudy	cloudy	light rain	mod rain
km/h	SW	N	E	ESE	SE	ESE	ESE	ESE	ESE	ESE	E	ESE	ESE	S	ESE	SSW	SW	SSW	ESE	S	SE	ESE	E	S	WSW	W	SE	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	ESE	ESE	E	SSE
mm	1	—	—	1	11	2	9	3	—	—	—	—	—	—	1	2	3	13	23	22	1	1	3	—	1	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	—	—	1	8
max °C	13	12	10	12	12	11	13	14	13	17	16	13	17	15	14	14	13	12	12	13	9	10	9	8	11	9	7	9	9	5	11	9	5	10	8	4	9	8	4	11	9	7	8	8	9	13	12
Moonrise	6:44	—	—	7:54	—	—	9:01	—	—	10:03	—	—	10:55	—	—	11:38	—	—	12:13	—	—	12:40	—	—	1:02	—	—	1:21	—	—	1:39	—	—	1:56	—	—	2:14	—	—	2:35	—	—	—	3:00	—	—	3:33
Moonset	—	4:06	—	—	4:35	—	—	5:10	—	—	5:55	—	—	6:48	—	—	7:48	—	—	8:53	—	—	—	10:00	—	—	11:08	—	—	—	12:16	—	—	1:25	—	—	2:36	—	—	3:51	—	—	5:10	—	—	6:33	—
	7:05	—	—	7:07	—	—	7:07	—	—	7:09	—	—	7:11	—	—	7:11	—	—	7:13	—	—	7:15	—	—	7:16	—	—	7:18	—	—	7:18	—	—	7:20	—	—	7:22	—	—	7:22	—	—	7:24	—	—	7:26	—
	—	4:50	—	—	4:47	—	—	4:46	—	—	4:45	—	—	4:45	—	—	4:44	—	—	4:42	—	—	4:40	—	—	4:39	—	—	4:38	—	—	4:37	—	—	4:37	—	—	4:37	—	—	4:36	—	—	4:35	—	—	4:34
	Today's sea temperature in Knappa, Knappa Slough, Columbia River is 13.4°C (Statistics for 08 Nov 1981-2005 – mean: 11.7 max: 12.9 min: 10.6°C)