Tides Today & Tomorrow in Adak Island, AK

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in Adak Island, AK.
Next low tide (tomorrow) : 6:51 am (-0.2 ft)
Next high tide : in 9h 03m at 10:19 pm (3.6 ft)
Sunset today : 9:01 pm
Sunrise tomorrow : 6:38 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #9461380
Common Questions About Tides

Adak Island, AK Tides - Feb 1925

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:162.410:10 AM4.03:252.26:080.58:556:04First Quarter1Sun
2Mon10:294.06:510.28:546:06Waxing Gibbous2Mon
3Tue10:454.07:320.18:526:08Waxing Gibbous3Tue
4Wed10:584.18:120.08:516:10Waxing Gibbous4Wed
5Thu11:094.18:500.08:496:12Waxing Gibbous5Thu
6Fri11:214.19:270.08:476:13Full Moon6Fri
7Sat11:394.010:040.08:456:15Full Moon7Sat
8Sun11:593.910:390.18:446:17Full Moon8Sun
9Mon12:163.711:130.28:426:19Full Moon9Mon
10Tue9:463.411:460.48:406:21Waning Gibbous10Tue
11Wed9:033.28:386:23Waning Gibbous11Wed
12Thu8:323.25:192.612:170.72:352.58:366:25Waning Gibbous12Thu
13Fri8:153.27:252.312:461.13:031.98:346:26Waning Gibbous13Fri
14Sat8:153.49:302.21:121.53:381.48:326:28Third Quarter14Sat
15Sun8:253.71:322.04:190.88:306:30Third Quarter15Sun
16Mon8:454.05:030.28:296:32Third Quarter16Mon
17Tue9:144.35:49-0.28:276:34Third Quarter17Tue
18Wed9:514.56:38-0.58:256:36Waning Crescent18Wed
19Thu10:374.77:29-0.78:236:38Waning Crescent19Thu
20Fri11:284.68:21-0.78:206:39Waning Crescent20Fri
21Sat12:264.49:13-0.68:186:41New Moon21Sat
22Sun1:324.110:04-0.48:166:43New Moon22Sun
23Mon6:223.12:463.79:332.910:550.08:146:45New Moon23Mon
24Tue6:383.14:113.211:142.511:430.48:126:47Waxing Crescent24Tue
25Wed6:593.25:442.812:382.08:106:48Waxing Crescent25Wed
26Thu7:243.37:242.612:310.91:461.58:086:50Waxing Crescent26Thu
27Fri7:493.49:092.61:171.42:451.08:066:52Waxing Crescent27Fri
28Sat8:153.410:522.62:021.83:370.78:046:54First Quarter28Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9461380)

Common Questions About Adak Island, AK Tides

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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 2:35 am — 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 neap phase. Tonight's moon is 48% 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 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 (48% illuminated). This places Adak Island, AK in a neap tide cycle, so tidal ranges are near their weekly minimum 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