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

TIDE TIMES for Sunday, August 23, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 6:02 pm (5.3 ft)
Next high tide : in 5h 21m at 1:26 pm (5.0 ft)
Sunset today : 9:53 pm
Sunrise tomorrow : 7:24 am
Moon phase : Waxing Gibbous (83% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Apr 1935

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:327.75:360.75:59-0.66:077:13New Moon1Mon
2Tue12:028.012:247.86:26-0.76:39-0.56:057:15New Moon2Tue
3Wed12:398.61:137.87:12-1.87:17-0.16:027:17New Moon3Wed
4Thu1:169.12:007.57:56-2.37:550.56:007:19New Moon4Thu
5Fri1:539.22:467.18:40-2.38:321.35:577:21Waxing Crescent5Fri
6Sat2:309.03:336.69:23-1.89:112.25:547:23Waxing Crescent6Sat
7Sun3:098.64:226.010:09-1.09:503.15:527:25Waxing Crescent7Sun
8Mon3:518.05:175.410:580.010:354.05:497:27First Quarter8Mon
9Tue4:377.36:274.911:561.011:304.75:477:29First Quarter9Tue
10Wed5:336.68:034.81:101.75:447:31First Quarter10Wed
11Thu6:486.09:225.012:505.12:361.95:427:33First Quarter11Thu
12Fri8:185.810:115.42:454.83:421.85:397:35Waxing Gibbous12Fri
13Sat9:355.810:455.94:034.04:291.65:367:37Waxing Gibbous13Sat
14Sun10:326.011:136.34:542.95:051.55:347:39Waxing Gibbous14Sun
15Mon11:206.211:386.85:341.95:371.45:317:41Waxing Gibbous15Mon
16Tue12:016.46:090.96:061.45:297:43Full Moon16Tue
17Wed12:047.312:396.56:410.16:351.65:267:45Full Moon17Wed
18Thu12:307.71:156.57:13-0.67:041.85:247:47Full Moon18Thu
19Fri12:588.11:526.57:46-1.07:352.15:217:49Full Moon19Fri
20Sat1:288.32:296.48:21-1.28:072.55:197:51Waning Gibbous20Sat
21Sun2:008.43:096.18:58-1.28:412.95:177:53Waning Gibbous21Sun
22Mon2:358.43:545.89:40-1.09:203.45:147:55Waning Gibbous22Mon
23Tue3:158.14:455.410:27-0.610:053.85:127:57Waning Gibbous23Tue
24Wed4:037.75:475.211:21-0.211:044.25:097:59Third Quarter24Wed
25Thu5:027.27:005.212:240.25:078:01Third Quarter25Thu
26Fri6:156.68:135.612:214.31:340.55:058:03Third Quarter26Fri
27Sat7:436.39:126.21:553.72:430.65:028:05Waning Crescent27Sat
28Sun9:086.210:007.03:222.63:420.65:008:07Waning Crescent28Sun
29Mon10:206.410:447.74:291.14:340.74:588:09Waning Crescent29Mon
30Tue11:236.611:258.45:25-0.45:210.94:558:11Waning Crescent30Tue
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 3:44 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 Chiachi Island (East Side), AK?

Chiachi Island (East Side), AK is currently in a spring phase. Tonight's moon is 83% 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 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 Waxing Gibbous (83% illuminated). This places Chiachi Island (East Side), 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