Tides Today & Tomorrow in Adak Island, AK

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Adak Island, AK.
Next low tide : in 25m at 4:38 pm (1.9 ft)
Next high tide : 11:33 pm (3.7 ft)
Sunset today : 9:52 pm
Sunrise tomorrow : 5:53 am
Moon phase : First Quarter (55% illuminated)
Tide Station Location : Station #9461380
Common Questions About Tides

Adak Island, AK Tides - Oct 1973

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:473.56:213.32:48-0.23:313.37:487:24Waxing Crescent1Mon
2Tue12:353.53:32-0.24:153.37:497:21First Quarter2Tue
3Wed1:203.44:16-0.24:483.27:517:19First Quarter3Wed
4Thu2:023.34:59-0.15:173.17:537:17First Quarter4Thu
5Fri2:363.15:400.15:503.07:547:14First Quarter5Fri
6Sat2:572.96:190.36:322.77:567:12Waxing Gibbous6Sat
7Sun3:022.86:540.67:202.47:587:10Waxing Gibbous7Sun
8Mon2:552.77:240.98:142.17:597:08Waxing Gibbous8Mon
9Tue12:572.42:462.77:501.39:071.68:017:05Waxing Gibbous9Tue
10Wed2:502.32:412.88:081.89:591.18:037:03Full Moon10Wed
11Thu5:372.32:403.07:572.310:500.68:047:01Full Moon11Thu
12Fri2:473.411:400.18:066:59Full Moon12Fri
13Sat3:083.78:086:57Waning Gibbous13Sat
14Sun3:453.912:31-0.48:106:54Waning Gibbous14Sun
15Mon4:394.11:22-0.78:116:52Waning Gibbous15Mon
16Tue5:474.12:14-0.98:136:50Waning Gibbous16Tue
17Wed12:453.83:06-1.03:003.78:156:48Third Quarter17Wed
18Thu12:563.63:57-0.94:133.48:166:46Third Quarter18Thu
19Fri1:103.54:47-0.75:233.08:186:44Third Quarter19Fri
20Sat1:253.35:34-0.26:312.48:206:42Waning Crescent20Sat
21Sun1:413.36:190.37:371.88:226:39Waning Crescent21Sun
22Mon12:382.71:563.37:000.98:401.38:246:37Waning Crescent22Mon
23Tue2:292.52:113.37:381.69:370.78:256:35Waning Crescent23Tue
24Wed4:422.52:243.48:102.210:300.38:276:33New Moon24Wed
25Thu2:333.511:180.08:296:31New Moon25Thu
26Fri2:343.68:316:29New Moon26Fri
27Sat2:093.712:02-0.38:326:27New Moon27Sat
28Sun9:553.912:44-0.48:346:25Waxing Crescent28Sun
29Mon10:204.012:25-0.48:366:24Waxing Crescent29Mon
30Tue10:484.01:05-0.48:386:22Waxing Crescent30Tue
31Wed11:163.91:45-0.38:406:20Waxing Crescent31Wed
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 8:05 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 neap phase. Tonight's moon is 55% 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 (55% 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