Tides Today & Tomorrow in Adak Island, AK

TIDE TIMES for Monday, August 17, 2026
The tide is currently rising in Adak Island, AK.
Next low tide (tomorrow) : 5:18 am (0.4 ft)
Next high tide : in 5h 18m at 9:42 pm (3.3 ft)
Sunset today : 9:05 pm
Sunrise tomorrow : 6:35 am
Moon phase : Waxing Crescent (29% illuminated)
Tide Station Location : Station #9461380
Common Questions About Tides

Adak Island, AK Tides - May 1929

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:043.53:58-0.45:468:40Third Quarter1Wed
2Thu1:303.34:35-0.25:448:42Third Quarter2Thu
3Fri1:423.15:080.15:428:43Third Quarter3Fri
4Sat1:372.99:11 AM2.56:382.45:360.55:418:45Waning Crescent4Sat
5Sun1:222.711:11 AM2.17:171.95:581.05:398:47Waning Crescent5Sun
6Mon1:112.81:331.98:011.36:061.55:378:48Waning Crescent6Mon
7Tue1:063.08:470.65:358:50New Moon7Tue
8Wed1:083.39:36-0.15:338:51New Moon8Wed
9Thu1:213.710:26-0.85:328:53New Moon9Thu
10Fri1:454.011:18-1.35:308:55Waxing Crescent10Fri
11Sat2:224.212:11-1.65:288:56Waxing Crescent11Sat
12Sun3:134.31:05-1.75:278:58Waxing Crescent12Sun
13Mon4:194.211:343.91:58-1.75:258:59Waxing Crescent13Mon
14Tue5:363.911:483.72:363.72:50-1.45:249:01First Quarter14Tue
15Wed6:593.53:553.33:40-1.05:229:02First Quarter15Wed
16Thu12:073.58:27 AM3.05:082.74:27-0.55:219:04First Quarter16Thu
17Fri12:253.410:03 AM2.56:152.15:090.15:199:05Waxing Gibbous17Fri
18Sat12:423.311:52 AM2.17:161.55:440.85:189:07Waxing Gibbous18Sat
19Sun12:553.22:061.98:110.86:101.55:169:08Waxing Gibbous19Sun
20Mon1:033.28:590.35:159:10Waxing Gibbous20Mon
21Tue1:053.39:41-0.15:149:11Full Moon21Tue
22Wed12:553.410:18-0.45:129:13Full Moon22Wed
23Thu12:263.611:423.810:53-0.65:119:14Full Moon23Thu
24Fri11:143.911:28-0.85:109:15Full Moon24Fri
25Sat11:124.012:03-0.85:099:17Waning Gibbous25Sat
26Sun11:254.012:40-0.85:089:18Waning Gibbous26Sun
27Mon11:433.91:18-0.85:079:19Waning Gibbous27Mon
28Tue1:55-0.75:069:21Waning Gibbous28Tue
29Wed12:013.82:31-0.65:059:22Third Quarter29Wed
30Thu12:133.63:03-0.45:049:23Third Quarter30Thu
31Fri12:153.33:310.05:039:24Third Quarter31Fri
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 1:30 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 transitional phase. Tonight's moon is 29% 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 Waxing Crescent (29% 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