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

TIDE TIMES for Monday, August 10, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 20m at 7:13 pm (3.6 ft)
Next high tide (tomorrow) : 1:14 am (8.8 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 - Sep 1954

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:076.73:137.69:121.59:490.95:407:31Waxing Crescent1Wed
2Thu3:436.23:427.49:412.410:281.45:427:29Waxing Crescent2Thu
3Fri4:235.64:167.210:113.311:142.05:447:26First Quarter3Fri
4Sat5:115.04:586.910:454.15:467:24First Quarter4Sat
5Sun6:184.55:536.712:132.511:30 AM4.85:487:21First Quarter5Sun
6Mon8:134.47:076.51:342.712:425.45:507:18First Quarter6Mon
7Tue9:534.78:316.73:092.42:205.45:527:16Waxing Gibbous7Tue
8Wed10:415.29:417.04:141.63:444.75:547:13Waxing Gibbous8Wed
9Thu11:155.810:387.54:590.84:453.65:567:11Waxing Gibbous9Thu
10Fri11:456.511:287.95:370.15:342.45:587:08Waxing Gibbous10Fri
11Sat12:167.26:12-0.46:191.16:007:05Full Moon11Sat
12Sun12:148.212:477.96:46-0.77:02-0.16:027:03Full Moon12Sun
13Mon12:598.31:218.57:21-0.67:45-1.06:047:00Full Moon13Mon
14Tue1:448.11:558.97:56-0.28:29-1.56:066:57Waning Gibbous14Tue
15Wed2:307.72:339.18:330.59:15-1.56:086:55Waning Gibbous15Wed
16Thu3:187.23:149.19:121.410:05-1.06:096:52Waning Gibbous16Thu
17Fri4:116.53:598.89:542.411:02-0.36:116:49Third Quarter17Fri
18Sat5:135.84:528.210:433.56:136:47Third Quarter18Sat
19Sun6:325.35:597.612:090.611:45 AM4.46:156:44Third Quarter19Sun
20Mon8:155.27:247.21:341.21:124.96:176:41Third Quarter20Mon
21Tue9:395.68:537.13:051.23:014.66:196:39Waning Crescent21Tue
22Wed10:356.110:067.24:120.94:193.76:216:36Waning Crescent22Wed
23Thu11:166.611:027.45:030.65:142.66:236:34Waning Crescent23Thu
24Fri11:507.111:497.55:430.55:591.76:256:31Waning Crescent24Fri
25Sat12:197.56:170.56:370.96:276:28New Moon25Sat
26Sun12:307.512:457.86:470.77:110.36:296:26New Moon26Sun
27Mon1:067.41:108.07:151.17:42-0.16:316:23New Moon27Mon
28Tue1:417.21:358.17:411.58:13-0.16:336:20New Moon28Tue
29Wed2:157.02:018.18:082.18:450.06:356:18Waxing Crescent29Wed
30Thu2:496.62:298.08:362.79:190.46:376:15Waxing Crescent30Thu
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 10:13 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