Tides Today & Tomorrow in Adak Island, AK

TIDE TIMES for Sunday, August 16, 2026
The tide is currently falling in Adak Island, AK.
Next low tide : in 2h 45m at 3:26 am (1.4 ft)
Next high tide : 8:47 am (2.4 ft)
Sunset today : 9:07 pm
Sunrise tomorrow : 6:33 am
Moon phase : Waxing Crescent (20% illuminated)
Tide Station Location : Station #9461380
Common Questions About Tides

Adak Island, AK Tides - Apr 1932

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri2:543.011:04 AM3.26:342.77:210.16:507:50Waning Crescent1Fri
2Sat3:222.812:122.87:432.48:040.56:487:51Waning Crescent2Sat
3Sun3:382.61:352.48:512.08:411.06:457:53Waning Crescent3Sun
4Mon3:422.53:262.29:501.69:141.66:437:55New Moon4Mon
5Tue3:352.56:032.210:381.29:432.16:417:57New Moon5Tue
6Wed3:232.611:170.86:397:58New Moon6Wed
7Thu3:072.811:530.46:368:00New Moon7Thu
8Fri2:343.011:283.312:300.16:348:02Waxing Crescent8Fri
9Sat1:08-0.26:328:03Waxing Crescent9Sat
10Sun12:033.51:48-0.36:308:05Waxing Crescent10Sun
11Mon12:503.72:31-0.56:278:07Waxing Crescent11Mon
12Tue1:583.73:14-0.66:258:08First Quarter12Tue
13Wed5:153.73:57-0.66:238:10First Quarter13Wed
14Thu6:393.64:39-0.66:218:12First Quarter14Thu
15Fri7:573.45:18-0.46:188:13First Quarter15Fri
16Sat9:213.15:560.06:168:15Waxing Gibbous16Sat
17Sun1:522.611:01 AM2.76:142.26:310.56:148:17Waxing Gibbous17Sun
18Mon1:342.612:592.47:291.57:041.16:128:19Waxing Gibbous18Mon
19Tue1:352.93:152.38:370.77:321.86:108:20Full Moon19Tue
20Wed1:463.29:410.06:088:22Full Moon20Wed
21Thu2:083.610:41-0.76:068:24Full Moon21Thu
22Fri2:383.911:39-1.26:048:25Waning Gibbous22Fri
23Sat3:194.112:35-1.56:028:27Waning Gibbous23Sat
24Sun4:104.111:033.91:31-1.65:598:29Waning Gibbous24Sun
25Mon5:114.011:323.81:283.82:26-1.55:578:30Third Quarter25Mon
26Tue6:183.82:523.53:20-1.25:558:32Third Quarter26Tue
27Wed12:043.67:28 AM3.44:053.24:11-0.85:538:34Third Quarter27Wed
28Thu12:343.48:40 AM3.05:152.84:58-0.45:518:35Third Quarter28Thu
29Fri1:013.29:57 AM2.66:222.35:400.25:508:37Waning Crescent29Fri
30Sat1:223.011:28 AM2.27:231.96:160.85:488:39Waning Crescent30Sat
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 6:06 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 spring phase. Tonight's moon is 20% 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 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 Waxing Crescent (20% illuminated). This places Adak Island, AK 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