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

TIDE TIMES for Saturday, July 4, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 2h 51m at 12:08 pm (-0.7 ft)
Next high tide : 6:29 pm (6.2 ft)
Sunset today : 11:22 pm
Sunrise tomorrow : 5:59 am
Moon phase : Waning Gibbous (79% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Aug 2003

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri4:428.15:447.011:30-1.511:391.86:4110:43Waxing Crescent1Fri
2Sat5:267.66:207.212:06-0.96:4310:41Waxing Crescent2Sat
3Sun6:156.97:007.412:301.612:440.06:4510:39First Quarter3Sun
4Mon7:116.17:457.51:271.41:261.16:4710:37First Quarter4Mon
5Tue8:205.38:387.62:331.42:152.36:4910:35First Quarter5Tue
6Wed9:504.89:417.83:511.13:153.46:5010:33First Quarter6Wed
7Thu11:324.810:508.05:150.64:294.16:5210:31Waxing Gibbous7Thu
8Fri12:555.26:30-0.15:474.26:5410:29Waxing Gibbous8Fri
9Sat1:545.87:31-0.86:583.96:5610:27Waxing Gibbous9Sat
10Sun1:008.62:416.28:22-1.47:583.46:5810:24Full Moon10Sun
11Mon1:558.83:216.69:06-1.78:492.87:0010:22Full Moon11Mon
12Tue2:438.83:576.99:45-1.89:342.27:0210:20Full Moon12Tue
13Wed3:278.74:317.010:20-1.710:161.87:0410:18Full Moon13Wed
14Thu4:088.35:037.110:53-1.210:561.67:0610:15Waning Gibbous14Thu
15Fri4:477.85:337.111:24-0.611:361.67:0810:13Waning Gibbous15Fri
16Sat5:267.16:037.011:540.37:1010:11Waning Gibbous16Sat
17Sun6:056.46:346.912:171.712:241.37:1210:08Waning Gibbous17Sun
18Mon6:485.67:086.81:012.012:552.47:1410:06Third Quarter18Mon
19Tue7:395.07:486.71:522.31:303.47:1610:03Third Quarter19Tue
20Wed8:514.58:396.62:552.62:144.37:1710:01Third Quarter20Wed
21Thu10:454.39:466.64:192.63:195.17:199:59Third Quarter21Thu
22Fri12:294.65:462.24:445.47:219:56Waning Crescent22Fri
23Sat1:235.16:481.56:015.17:239:54Waning Crescent23Sat
24Sun12:017.21:595.57:350.77:014.57:259:51Waning Crescent24Sun
25Mon12:557.72:306.08:13-0.17:493.77:279:49Waning Crescent25Mon
26Tue1:428.12:596.48:47-0.88:322.87:299:46New Moon26Tue
27Wed2:258.53:286.99:19-1.39:141.97:319:44New Moon27Wed
28Thu3:068.63:587.39:52-1.59:551.07:339:41New Moon28Thu
29Fri3:488.54:307.710:25-1.410:380.47:359:39Waxing Crescent29Fri
30Sat4:318.15:048.010:59-0.911:230.07:379:36Waxing Crescent30Sat
31Sun5:177.55:408.211:350.07:399:34Waxing Crescent31Sun
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 3:18 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 transitional phase. Tonight's moon is 79% 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 (79% 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