Tides Today & Tomorrow in Chiachi Island (East Side), AK

TIDE TIMES for Tuesday, August 4, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 12:38 pm (1.3 ft)
Next high tide : in 2h 05m at 6:24 am (6.1 ft)
Sunset today : 10:36 pm
Sunrise tomorrow : 6:48 am
Moon phase : Third Quarter (64% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Dec 1963

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:207.512:5310.16:572.27:54-2.98:424:08Full Moon1Sun
2Mon2:107.51:3710.17:432.58:40-2.88:434:08Waning Gibbous2Mon
3Tue3:007.42:239.78:302.99:27-2.38:454:07Waning Gibbous3Tue
4Wed3:517.13:119.19:203.410:16-1.48:464:06Waning Gibbous4Wed
5Thu4:456.94:038.210:143.911:07-0.48:484:05Waning Gibbous5Thu
6Fri5:426.64:597.311:174.38:494:05Third Quarter6Fri
7Sat6:446.56:066.412:020.612:344.58:514:04Third Quarter7Sat
8Sun7:486.67:275.81:021.52:084.28:524:04Third Quarter8Sun
9Mon8:456.88:545.52:062.23:273.48:534:03Waning Crescent9Mon
10Tue9:327.110:075.53:062.74:262.58:554:03Waning Crescent10Tue
11Wed10:127.411:055.73:573.05:121.68:564:03Waning Crescent11Wed
12Thu10:477.711:536.04:413.35:520.88:574:02Waning Crescent12Thu
13Fri11:208.05:203.56:260.28:584:02Waning Crescent13Fri
14Sat12:346.211:52 AM8.35:573.76:59-0.38:594:02New Moon14Sat
15Sun1:106.412:248.56:323.87:30-0.69:004:02New Moon15Sun
16Mon1:456.512:578.67:073.88:02-0.89:014:02New Moon16Mon
17Tue2:206.61:308.67:423.98:35-0.89:024:02New Moon17Tue
18Wed2:556.52:048.58:184.09:09-0.79:024:03Waxing Crescent18Wed
19Thu3:326.52:418.28:564.29:46-0.59:034:03Waxing Crescent19Thu
20Fri4:116.43:207.89:384.310:26-0.29:044:03Waxing Crescent20Fri
21Sat4:536.34:067.210:284.311:090.39:044:04Waxing Crescent21Sat
22Sun5:396.45:026.611:274.311:570.99:054:04First Quarter22Sun
23Mon6:306.66:106.012:383.99:054:05First Quarter23Mon
24Tue7:267.07:355.612:521.61:593.29:064:05First Quarter24Tue
25Wed8:237.59:055.61:532.23:172.09:064:06Waxing Gibbous25Wed
26Thu9:178.210:235.92:562.64:230.69:064:07Waxing Gibbous26Thu
27Fri10:108.811:296.33:572.95:20-0.79:064:08Waxing Gibbous27Fri
28Sat11:009.44:553.06:11-1.89:074:08Full Moon28Sat
29Sun12:266.711:50 AM9.85:502.96:59-2.59:074:09Full Moon29Sun
30Mon1:167.112:3810.06:422.87:45-2.89:064:10Full Moon30Mon
31Tue2:037.31:259.97:312.88:31-2.79:064:12Full Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9459085)

Common Questions About Chiachi Island (East Side), AK Tides

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What time does the tide turn (slack tide) in Chiachi Island (East Side), AK today?

Slack tide in Chiachi Island (East Side), AK is approximately 9:31 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 Chiachi Island (East Side), AK?

Chiachi Island (East Side), AK is currently in a transitional phase. Tonight's moon is 64% 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 Chiachi Island (East Side), 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 Chiachi Island (East Side), AK?

Tide predictions for Chiachi Island (East Side), 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 Chiachi Island (East Side), AK?

Tide data for Chiachi Island (East Side), AK is sourced from NOAA Station #9459085. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9459085.

What is the moon phase in Chiachi Island (East Side), AK tonight?

Tonight the moon over Chiachi Island (East Side), AK is Third Quarter (64% illuminated). This places Chiachi Island (East Side), 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