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

TIDE TIMES for Monday, August 3, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 12:04 pm (0.3 ft)
Next high tide : in 1h 33m at 5:38 am (6.7 ft)
Sunset today : 10:39 pm
Sunrise tomorrow : 6:46 am
Moon phase : Waning Gibbous (74% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Mar 1966

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:587.39:374.512:274.82:491.57:276:10First Quarter1Tue
2Wed8:217.410:545.12:015.24:120.67:246:12Waxing Gibbous2Wed
3Thu9:417.911:415.93:364.95:13-0.47:226:14Waxing Gibbous3Thu
4Fri10:488.44:513.96:02-1.47:196:16Waxing Gibbous4Fri
5Sat12:206.611:46 AM8.95:522.76:45-2.17:176:18Full Moon5Sat
6Sun12:567.312:389.16:441.37:24-2.47:146:20Full Moon6Sun
7Mon1:317.91:269.07:320.28:01-2.27:116:23Full Moon7Mon
8Tue2:078.32:138.68:18-0.68:38-1.67:096:25Waning Gibbous8Tue
9Wed2:428.63:007.99:04-1.09:14-0.67:066:27Waning Gibbous9Wed
10Thu3:188.63:487.19:51-0.99:500.67:046:29Waning Gibbous10Thu
11Fri3:558.44:386.210:39-0.310:272.07:016:31Waning Gibbous11Fri
12Sat4:358.05:365.411:330.511:073.36:596:33Third Quarter12Sat
13Sun5:197.56:564.712:391.36:566:35Third Quarter13Sun
14Mon6:146.99:034.62:101.86:536:37Third Quarter14Mon
15Tue7:316.510:344.91:105.43:441.86:516:39Third Quarter15Tue
16Wed9:036.511:245.43:115.54:491.36:486:41Waning Crescent16Wed
17Thu10:156.711:585.84:354.95:360.86:466:43Waning Crescent17Thu
18Fri11:087.05:274.16:120.46:436:45Waning Crescent18Fri
19Sat12:246.211:50 AM7.26:063.26:410.06:406:47Waning Crescent19Sat
20Sun12:476.512:267.46:402.37:06-0.16:386:49New Moon20Sun
21Mon1:096.91:007.47:111.57:30-0.16:356:51New Moon21Mon
22Tue1:317.21:337.37:410.87:540.16:326:53New Moon22Tue
23Wed1:547.52:067.18:120.38:190.56:306:55New Moon23Wed
24Thu2:177.72:406.88:450.08:461.16:276:57Waxing Crescent24Thu
25Fri2:437.83:166.49:20-0.19:141.86:256:59Waxing Crescent25Fri
26Sat3:117.93:565.99:590.09:442.76:227:01Waxing Crescent26Sat
27Sun3:447.84:455.310:440.410:183.56:197:03Waxing Crescent27Sun
28Mon4:257.65:494.811:390.811:034.46:177:05First Quarter28Mon
29Tue5:177.47:274.512:511.16:147:07First Quarter29Tue
30Wed6:307.19:184.812:145.02:211.06:117:09First Quarter30Wed
31Thu8:027.010:235.41:575.13:430.46:097:11Waxing Gibbous31Thu
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 8:51 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 74% 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 Waning Gibbous (74% 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