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

TIDE TIMES for Thursday, July 30, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide (tomorrow) : in 57m at 9:18 pm (3.2 ft)
Next high tide : 3:08 am (8.1 ft)
Sunset today : 10:48 pm
Sunrise tomorrow : 6:36 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Apr 1975

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue5:068.16:205.712:060.07:078:13Third Quarter1Tue
2Wed5:547.47:295.21:050.97:048:15Third Quarter2Wed
3Thu6:526.78:595.012:484.22:201.77:018:17Third Quarter3Thu
4Fri8:096.110:205.22:084.73:461.96:598:19Third Quarter4Fri
5Sat9:375.911:155.63:564.54:521.86:568:21Waning Crescent5Sat
6Sun10:506.011:536.05:103.75:411.66:548:23Waning Crescent6Sun
7Mon11:456.26:022.86:191.46:518:25Waning Crescent7Mon
8Tue12:246.412:306.46:421.96:511.26:488:27Waning Crescent8Tue
9Wed12:516.91:106.67:171.07:211.26:468:29New Moon9Wed
10Thu1:187.31:466.77:490.37:491.36:438:31New Moon10Thu
11Fri1:457.72:216.88:20-0.38:181.46:418:33New Moon11Fri
12Sat2:128.02:556.78:52-0.78:471.76:388:35New Moon12Sat
13Sun2:418.13:316.59:26-0.99:192.06:368:37Waxing Crescent13Sun
14Mon3:128.24:086.310:02-0.99:522.56:338:39Waxing Crescent14Mon
15Tue3:468.14:505.910:42-0.710:292.96:318:41Waxing Crescent15Tue
16Wed4:257.95:385.611:27-0.311:133.46:288:43Waxing Crescent16Wed
17Thu5:107.66:365.312:180.16:268:45First Quarter17Thu
18Fri6:067.17:485.312:083.81:190.56:238:47First Quarter18Fri
19Sat7:176.69:045.51:214.02:290.86:218:49First Quarter19Sat
20Sun8:426.410:096.12:503.73:400.86:188:51First Quarter20Sun
21Mon10:066.411:026.94:172.74:430.66:168:54Waxing Gibbous21Mon
22Tue11:186.711:487.65:261.35:380.56:138:56Waxing Gibbous22Tue
23Wed12:206.96:23-0.26:270.56:118:58Waxing Gibbous23Wed
24Thu12:318.31:157.27:14-1.47:120.56:099:00Full Moon24Thu
25Fri1:138.92:057.38:00-2.27:550.86:069:02Full Moon25Fri
26Sat1:549.22:537.28:44-2.68:371.26:049:04Full Moon26Sat
27Sun2:349.23:397.09:28-2.59:181.76:019:06Waning Gibbous27Sun
28Mon3:148.94:256.610:11-2.110:002.35:599:08Waning Gibbous28Mon
29Tue3:558.55:136.210:55-1.310:443.05:579:10Waning Gibbous29Tue
30Wed4:387.86:035.811:41-0.511:313.65:559:12Waning Gibbous30Wed
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 12:13 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 spring phase. Tonight's moon is 100% 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 Full Moon (100% 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