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

TIDE TIMES for Monday, August 10, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 7:13 pm (3.6 ft)
Next high tide : in 4h 49m at 2:05 pm (5.9 ft)
Sunset today : 10:23 pm
Sunrise tomorrow : 6:59 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Apr 1955

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:056.79:565.82:064.33:270.86:077:13Waxing Gibbous1Fri
2Sat9:296.710:456.43:433.54:270.66:047:15Waxing Gibbous2Sat
3Sun10:366.811:256.94:492.45:150.46:027:17Waxing Gibbous3Sun
4Mon11:307.011:597.45:411.35:550.45:597:19Waxing Gibbous4Mon
5Tue12:167.06:230.46:290.55:577:21Full Moon5Tue
6Wed12:297.712:577.07:00-0.37:000.85:547:23Full Moon6Wed
7Thu12:578.01:346.97:34-0.77:301.25:517:25Full Moon7Thu
8Fri1:258.12:096.78:07-0.97:581.75:497:27Full Moon8Fri
9Sat1:538.12:446.58:39-0.88:282.25:467:29Waning Gibbous9Sat
10Sun2:218.03:196.19:12-0.48:582.85:447:31Waning Gibbous10Sun
11Mon2:527.83:575.79:490.19:303.45:417:33Waning Gibbous11Mon
12Tue3:267.54:395.210:290.610:063.95:397:35Waning Gibbous12Tue
13Wed4:057.05:324.911:161.210:514.45:367:37Third Quarter13Wed
14Thu4:526.66:424.712:121.75:347:39Third Quarter14Thu
15Fri5:536.18:044.81:201.95:317:41Third Quarter15Fri
16Sat7:125.89:085.21:204.72:311.85:297:43Third Quarter16Sat
17Sun8:365.89:535.92:514.13:311.55:267:45Waning Crescent17Sun
18Mon9:476.110:316.64:002.94:191.25:247:47Waning Crescent18Mon
19Tue10:476.411:087.44:541.55:031.05:217:49Waning Crescent19Tue
20Wed11:406.811:458.25:410.15:450.95:197:51Waning Crescent20Wed
21Thu12:297.06:26-1.26:250.95:167:53New Moon21Thu
22Fri12:238.81:177.27:10-2.27:061.15:147:55New Moon22Fri
23Sat1:039.32:057.17:55-2.87:481.45:117:57New Moon23Sat
24Sun1:449.52:536.98:41-2.98:311.85:097:59Waxing Crescent24Sun
25Mon2:289.33:456.69:29-2.59:182.45:078:01Waxing Crescent25Mon
26Tue3:168.94:416.210:21-1.910:103.05:048:03Waxing Crescent26Tue
27Wed4:098.35:445.911:17-1.011:123.55:028:05First Quarter27Wed
28Thu5:097.46:555.712:20-0.15:008:07First Quarter28Thu
29Fri6:216.68:095.912:303.81:300.64:578:09First Quarter29Fri
30Sat7:466.19:116.32:073.52:411.04:558:11First Quarter30Sat
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 4:39 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 5% 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 Waning Crescent (5% 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