Tides Today & Tomorrow in Coupeville, Whidbey Island, WA

TIDE TIMES for Wednesday, August 5, 2026
The tide is currently falling in Coupeville, Whidbey Island, WA.

Next low tide : in 2h 21m at 4:06 pm (5.4 ft)
Next high tide : 10:25 pm (11.4 ft)
Sunset today : 8:41 pm
Sunrise tomorrow : 5:52 am
Moon phase : Third Quarter (53% illuminated)
Tide Station Location : Station #9447929
Common Questions About Tides

Coupeville, Whidbey Island, WA Tides - Aug 2026

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Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Sat	7:01	9.5	8:28	11.8	1:47	5.2	1:27	-0.2	5:46	8:47		1	Sat
2	Sun	7:51	9.3	8:54	11.9	2:24	4.2	2:03	0.8	5:48	8:45		2	Sun
3	Mon	8:47	9.0	9:21	11.8	3:05	3.2	2:40	2.2	5:49	8:44		3	Mon
4	Tue	9:51	8.7	9:51	11.7	3:50	2.1	3:20	3.8	5:50	8:42		4	Tue
5	Wed	11:07	8.5	10:25	11.4	4:40	1.2	4:06	5.4	5:52	8:41		5	Wed
6	Thu			12:44	8.6	5:34	0.3	5:06	7.0	5:53	8:39		6	Thu
7	Fri			2:42	9.3	6:34	-0.5	6:35	8.1	5:54	8:38		7	Fri
8	Sat	12:01	10.8	4:07	10.2	7:37	-1.2	8:18	8.4	5:56	8:36		8	Sat
9	Sun	1:07	10.7	4:59	10.9	8:38	-1.9	9:40	8.1	5:57	8:34		9	Sun
10	Mon	2:17	10.7	5:39	11.4	9:35	-2.4	10:38	7.4	5:58	8:33		10	Mon
11	Tue	3:23	10.8	6:13	11.8	10:28	-2.6	11:25	6.5	6:00	8:31		11	Tue
12	Wed	4:24	10.9	6:44	12.0	11:16	-2.5			6:01	8:29		12	Wed
13	Thu	5:21	10.8	7:14	12.1	12:10	5.5	12:01	-1.9	6:02	8:28		13	Thu
14	Fri	6:18	10.5	7:42	12.1	12:53	4.5	12:44	-0.9	6:04	8:26		14	Fri
15	Sat	7:16	10.1	8:11	12.0	1:36	3.5	1:26	0.4	6:05	8:24		15	Sat
16	Sun	8:15	9.6	8:40	11.7	2:20	2.6	2:08	2.0	6:07	8:22		16	Sun
17	Mon	9:17	9.2	9:11	11.3	3:04	1.9	2:51	3.7	6:08	8:21		17	Mon
18	Tue	10:28	8.9	9:44	10.8	3:49	1.3	3:39	5.3	6:09	8:19		18	Tue
19	Wed	11:56	8.8	10:22	10.1	4:37	1.1	4:39	6.7	6:11	8:17		19	Wed
20	Thu			1:52	9.1	5:30	0.9	6:15	7.7	6:12	8:15		20	Thu
21	Fri			3:25	9.7	6:29	0.9	8:29	7.9	6:13	8:13		21	Fri
22	Sat	12:11	9.0	4:22	10.3	7:31	0.8	9:45	7.5	6:15	8:11		22	Sat
23	Sun	1:22	8.8	5:00	10.6	8:29	0.5	10:28	7.1	6:16	8:09		23	Sun
24	Mon	2:26	9.0	5:29	10.8	9:20	0.2	10:58	6.7	6:18	8:08		24	Mon
25	Tue	3:20	9.2	5:52	10.9	10:04	-0.1	11:20	6.2	6:19	8:06		25	Tue
26	Wed	4:05	9.6	6:09	11.0	10:42	-0.3	11:41	5.6	6:20	8:04		26	Wed
27	Thu	4:47	9.8	6:26	11.2	11:17	-0.3			6:22	8:02		27	Thu
28	Fri	5:29	10.0	6:45	11.4	12:06	4.8	11:51 AM	0.0	6:23	8:00		28	Fri
29	Sat	6:13	10.1	7:06	11.5	12:34	3.9	12:26	0.6	6:24	7:58		29	Sat
30	Sun	7:00	10.1	7:29	11.6	1:07	2.8	1:02	1.6	6:26	7:56		30	Sun
31	Mon	7:51	10.1	7:56	11.6	1:43	1.7	1:39	2.8	6:27	7:54		31	Mon
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (9447929)

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When is the lowest tide this week in Coupeville, Whidbey Island, WA?

The lowest tide this week in Coupeville, Whidbey Island, WA is -2.6 ft on Tuesday, Aug 11 at 10:28 am.

When is the highest tide this week in Coupeville, Whidbey Island, WA?

The highest tide this week in Coupeville, Whidbey Island, WA is 11.8 ft on Tuesday, Aug 11 at 6:13 pm — worth noting for launching your boat and being alert for possible high tide flooding.

What time does the tide turn (slack tide) in Coupeville, Whidbey Island, WA today?

Slack tide in Coupeville, Whidbey Island, WA is approximately 7:15 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Coupeville, Whidbey Island, WA?

Coupeville, Whidbey Island, WA is currently in a neap phase. Tonight's moon is 53% 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 minimum.

What datum are Coupeville, Whidbey Island, WA 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 Coupeville, Whidbey Island, WA?

Tide predictions for Coupeville, Whidbey Island, WA 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 Coupeville, Whidbey Island, WA?

Tide data for Coupeville, Whidbey Island, WA is sourced from NOAA Station #9447929. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9447929.

What time is high tide in Coupeville, Whidbey Island, WA today?

High tides in Coupeville, Whidbey Island, WA today: 11:07 am (8.5 ft), 10:25 pm (11.4 ft). The 10:25 pm high of 11.4 ft is notably higher than the other — known as diurnal inequality, common on coasts influenced by lunar declination.

What time is low tide in Coupeville, Whidbey Island, WA today?

Low tides in Coupeville, Whidbey Island, WA today: 4:40 am (1.2 ft), 4:06 pm (5.4 ft).

What is the tidal range in Coupeville, Whidbey Island, WA today?

Today's tidal range in Coupeville, Whidbey Island, WA is 10.3 ft — the difference between the day's highest and lowest water level. This month's average daily range is about 11.0 ft, so today's swing is below-average.

What is the moon phase in Coupeville, Whidbey Island, WA tonight?

Tonight the moon over Coupeville, Whidbey Island, WA is Third Quarter (53% illuminated). This places Coupeville, Whidbey Island, WA in a neap tide cycle, so tidal ranges are near their weekly minimum this week.

What type of tides does Coupeville, Whidbey Island, WA have — semi-diurnal, diurnal, or mixed?

Coupeville, Whidbey Island, WA has semi-diurnal tides — two high tides and two low tides roughly every 24 hours and 50 minutes, with similar heights.

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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