Tides Today & Tomorrow in Adak Island, AK

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Adak Island, AK.

Next low tide : in 1h 48m at 3:58 pm (2.2 ft)
Next high tide : 10:00 pm (3.4 ft)
Sunset today : 9:03 pm
Sunrise tomorrow : 6:36 am
Moon phase : First Quarter (39% illuminated)
Tide Station Location : Station #9461380
Common Questions About Tides

Adak Island, AK Tides - Jun 1927

< May 1927

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Jul 1927 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Wed	2:12	4.1			11:41	-1.5			5:03	9:25		1	Wed
2	Thu	2:44	4.0	10:12	3.9			12:30	-1.4	5:02	9:26		2	Thu
3	Fri			10:35	3.9			1:17	-1.3	5:01	9:27		3	Fri
4	Sat			11:01	3.8			2:02	-1.0	5:00	9:28		4	Sat
5	Sun			11:26	3.6			2:44	-0.6	5:00	9:29		5	Sun
6	Mon			11:46	3.5			3:22	-0.2	4:59	9:30		6	Mon
7	Tue			11:59	3.3			3:55	0.3	4:59	9:31		7	Tue
8	Wed	9:59	1.8			7:10	1.7	4:19	0.8	4:58	9:32		8	Wed
9	Thu	12:03	3.2	12:14	1.6	7:39	1.3	4:29	1.3	4:58	9:32		9	Thu
10	Fri	12:00	3.2	11:55	3.3	8:07	0.8			4:57	9:33		10	Fri
11	Sat			11:47	3.5	8:35	0.4			4:57	9:34		11	Sat
12	Sun			11:41	3.7	9:04	0.0			4:56	9:35		12	Sun
13	Mon			11:41	3.9	9:36	-0.3			4:56	9:35		13	Mon
14	Tue			11:52	4.1	10:09	-0.6			4:56	9:36		14	Tue
15	Wed					10:45	-0.9			4:56	9:37		15	Wed
16	Thu	12:13	4.3			11:24	-1.1			4:56	9:37		16	Thu
17	Fri	12:39	4.3					12:04	-1.2	4:56	9:38		17	Fri
18	Sat	1:05	4.2	11:47	3.9			12:44	-1.2	4:56	9:38		18	Sat
19	Sun			11:11	3.7			1:25	-1.1	4:56	9:38		19	Sun
20	Mon			10:54	3.5			2:04	-0.8	4:56	9:39		20	Mon
21	Tue			10:48	3.5			2:41	-0.4	4:56	9:39		21	Tue
22	Wed	7:46	2.3	10:51	3.5	4:59	2.2	3:14	0.2	4:56	9:39		22	Wed
23	Thu	10:04	1.9	11:01	3.7	5:44	1.4	3:41	0.9	4:57	9:39		23	Thu
24	Fri			12:41	1.7	6:32	0.6	3:52	1.6	4:57	9:39		24	Fri
25	Sat			11:38	4.2	7:20	-0.1			4:57	9:39		25	Sat
26	Sun					8:09	-0.7			4:58	9:39		26	Sun
27	Mon	12:01	4.4			8:58	-1.1			4:58	9:39		27	Mon
28	Tue	12:28	4.4			9:47	-1.4			4:59	9:39		28	Tue
29	Wed	12:57	4.4			10:36	-1.4			4:59	9:39		29	Wed
30	Thu	1:26	4.2			11:23	-1.3			5:00	9:39		30	Thu
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (9461380)

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What time does the tide turn (slack tide) in Adak Island, AK today?

Slack tide in Adak Island, AK is approximately 6:59 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 Adak Island, AK?

Adak Island, AK is currently in a transitional phase. Tonight's moon is 39% 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 shifting between spring and neap.

What datum are Adak Island, AK 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 Adak Island, AK?

Tide predictions for Adak Island, AK 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 Adak Island, AK?

Tide data for Adak Island, AK is sourced from NOAA Station #9461380. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9461380.

What is the moon phase in Adak Island, AK tonight?

Tonight the moon over Adak Island, AK is First Quarter (39% illuminated). This places Adak Island, AK in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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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