Tides Today & Tomorrow in Coos Bay, OR

TIDE TIMES for Monday, August 31, 2026
The tide is currently rising in Coos Bay, OR.

Next low tide : 9:58 am (0.7 ft)
Next high tide : in 2h 38m at 4:03 am (6.5 ft)
Sunset today : 7:53 pm
Sunrise tomorrow : 6:40 am
Moon phase : Waning Gibbous (86% illuminated)
Tide Station Location : Station #9432845
Common Questions About Tides

Coos Bay, OR Tides - Jul 1906

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Aug 1906 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Sun	9:03	5.0	9:11	7.4	3:01	0.8	2:36	1.4	4:39	8:01		1	Sun
2	Mon	10:19	5.2	10:02	7.8	4:03	0.0	3:38	1.7	4:40	8:01		2	Mon
3	Tue	11:25	5.5	10:53	8.1	4:59	-0.8	4:38	1.8	4:40	8:00		3	Tue
4	Wed			12:24	5.9	5:52	-1.4	5:36	1.9	4:41	8:00		4	Wed
5	Thu			1:18	6.2	6:42	-1.8	6:31	1.9	4:41	8:00		5	Thu
6	Fri	12:33	8.4	2:08	6.4	7:29	-2.0	7:24	1.8	4:42	8:00		6	Fri
7	Sat	1:23	8.3	2:56	6.6	8:16	-2.0	8:16	1.8	4:43	7:59		7	Sat
8	Sun	2:13	8.0	3:42	6.6	9:01	-1.7	9:08	1.8	4:43	7:59		8	Sun
9	Mon	3:02	7.5	4:28	6.6	9:45	-1.3	10:01	1.8	4:44	7:59		9	Mon
10	Tue	3:52	6.9	5:13	6.6	10:29	-0.7	10:59	1.9	4:45	7:58		10	Tue
11	Wed	4:45	6.2	5:58	6.5	11:14	-0.1			4:46	7:58		11	Wed
12	Thu	5:42	5.5	6:44	6.5	12:01	1.8	12:00	0.6	4:46	7:57		12	Thu
13	Fri	6:47	5.0	7:32	6.4	1:07	1.7	12:49	1.2	4:47	7:57		13	Fri
14	Sat	8:01	4.6	8:19	6.4	2:13	1.4	1:42	1.8	4:48	7:56		14	Sat
15	Sun	9:19	4.5	9:06	6.5	3:15	1.1	2:37	2.2	4:49	7:55		15	Sun
16	Mon	10:29	4.6	9:52	6.7	4:10	0.7	3:33	2.4	4:50	7:55		16	Mon
17	Tue	11:27	4.9	10:35	6.8	4:58	0.3	4:26	2.6	4:51	7:54		17	Tue
18	Wed			12:14	5.1	5:40	-0.1	5:14	2.6	4:51	7:53		18	Wed
19	Thu			12:55	5.4	6:19	-0.4	5:59	2.5	4:52	7:52		19	Thu
20	Fri			1:33	5.6	6:56	-0.7	6:40	2.4	4:53	7:52		20	Fri
21	Sat	12:35	7.3	2:09	5.8	7:31	-0.9	7:20	2.3	4:54	7:51		21	Sat
22	Sun	1:13	7.3	2:45	6.0	8:06	-1.0	8:00	2.2	4:55	7:50		22	Sun
23	Mon	1:53	7.3	3:21	6.2	8:41	-1.0	8:42	2.1	4:56	7:49		23	Mon
24	Tue	2:33	7.1	3:57	6.3	9:16	-0.8	9:26	1.9	4:57	7:48		24	Tue
25	Wed	3:17	6.8	4:35	6.5	9:53	-0.5	10:16	1.8	4:58	7:47		25	Wed
26	Thu	4:06	6.4	5:15	6.6	10:33	-0.1	11:13	1.6	4:59	7:46		26	Thu
27	Fri	5:02	5.8	5:58	6.8	11:17	0.4			5:00	7:45		27	Fri
28	Sat	6:10	5.3	6:47	7.0	12:17	1.3	12:07	1.0	5:01	7:44		28	Sat
29	Sun	7:29	4.9	7:42	7.2	1:27	0.9	1:05	1.5	5:02	7:43		29	Sun
30	Mon	8:55	4.9	8:41	7.4	2:38	0.4	2:10	2.0	5:03	7:42		30	Mon
31	Tue	10:13	5.1	9:40	7.6	3:44	-0.2	3:19	2.2	5:04	7:41		31	Tue
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (9432845)

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Is this week a spring tide or neap tide in Coos Bay, OR?

Coos Bay, OR is currently in a spring phase. Tonight's moon is 86% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Coos Bay, OR tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Coos Bay, OR?

Tide predictions for Coos Bay, OR come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Coos Bay, OR?

Tide data for Coos Bay, OR is sourced from NOAA Station #9432845. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9432845.

What is the moon phase in Coos Bay, OR tonight?

Tonight the moon over Coos Bay, OR is Waning Gibbous (86% illuminated). This places Coos Bay, OR in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA

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