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

TIDE TIMES for Monday, August 3, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide (tomorrow) : in 6h 13m at 12:41 am (1.4 ft)
Next high tide (tomorrow) : 6:24 am (6.1 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 - Oct 1964

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:356.310:027.64:070.64:143.86:406:11Waning Crescent1Thu
2Fri11:196.911:037.85:030.15:142.66:426:08Waning Crescent2Fri
3Sat11:577.411:548.05:48-0.26:031.56:446:06New Moon3Sat
4Sun12:307.96:26-0.26:450.66:466:03New Moon4Sun
5Mon12:398.01:018.27:010.07:24-0.16:486:01New Moon5Mon
6Tue1:207.91:318.37:330.48:00-0.46:505:58New Moon6Tue
7Wed1:597.61:598.38:031.18:35-0.46:525:55Waxing Crescent7Wed
8Thu2:377.22:278.28:331.89:10-0.26:545:53Waxing Crescent8Thu
9Fri3:166.72:568.09:042.79:460.36:565:50Waxing Crescent9Fri
10Sat3:566.23:287.69:353.610:271.06:585:48Waxing Crescent10Sat
11Sun4:415.74:047.210:104.411:141.77:005:45First Quarter11Sun
12Mon5:375.24:496.710:535.27:025:43First Quarter12Mon
13Tue6:585.05:506.312:132.411:53 AM5.77:045:40First Quarter13Tue
14Wed8:445.17:156.11:322.71:255.97:065:38First Quarter14Wed
15Thu9:475.58:426.22:582.53:075.37:085:35Waxing Gibbous15Thu
16Fri10:256.09:496.53:572.04:124.37:105:33Waxing Gibbous16Fri
17Sat10:566.610:426.94:411.44:583.17:125:30Waxing Gibbous17Sat
18Sun11:267.211:297.35:181.05:391.87:145:28Waxing Gibbous18Sun
19Mon11:557.85:530.76:180.67:165:25Full Moon19Mon
20Tue12:147.612:268.46:270.66:57-0.57:185:23Full Moon20Tue
21Wed12:577.712:598.97:020.87:37-1.47:205:21Full Moon21Wed
22Thu1:417.71:339.37:381.28:19-1.87:235:18Waning Gibbous22Thu
23Fri2:267.52:119.48:161.89:03-1.87:255:16Waning Gibbous23Fri
24Sat3:157.12:529.28:572.59:52-1.47:275:13Waning Gibbous24Sat
25Sun4:086.63:388.89:413.410:46-0.77:295:11Waning Gibbous25Sun
26Mon5:116.24:328.210:354.211:490.17:315:09Third Quarter26Mon
27Tue6:275.95:407.511:434.97:335:07Third Quarter27Tue
28Wed7:565.97:057.01:050.81:165.07:355:04Third Quarter28Wed
29Thu9:106.38:376.82:281.13:014.47:375:02Waning Crescent29Thu
30Fri10:046.99:546.83:371.14:143.27:395:00Waning Crescent30Fri
31Sat10:477.410:557.04:311.05:091.97:414:58Waning Crescent31Sat
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 3:32 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