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

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 5h 21m at 10:52 pm (1.7 ft)
Next high tide (tomorrow) : 4:44 am (8.6 ft)
Sunset today : 11:10 pm
Sunrise tomorrow : 6:14 am
Moon phase : Waxing Crescent (8% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Jan 1988

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:075.711:57 AM8.45:574.87:27-0.510:065:13Waxing Gibbous1Fri
2Sat1:536.012:428.66:494.88:06-0.710:065:14Full Moon2Sat
3Sun2:316.21:238.67:334.68:42-0.810:055:15Full Moon3Sun
4Mon3:056.42:018.68:134.49:14-0.910:055:17Full Moon4Mon
5Tue3:366.42:378.58:504.19:45-0.810:055:18Full Moon5Tue
6Wed4:066.53:128.29:263.910:14-0.610:045:19Waning Gibbous6Wed
7Thu4:356.53:477.810:033.810:43-0.210:035:21Waning Gibbous7Thu
8Fri5:046.54:237.210:433.711:120.310:035:22Waning Gibbous8Fri
9Sat5:336.55:016.611:263.611:431.010:025:24Waning Gibbous9Sat
10Sun6:056.65:465.912:153.510:015:26Third Quarter10Sun
11Mon6:406.86:405.212:151.81:123.410:005:27Third Quarter11Mon
12Tue7:216.97:554.612:522.72:213.19:595:29Third Quarter12Tue
13Wed8:117.29:374.51:373.73:412.49:585:31Third Quarter13Wed
14Thu9:117.611:184.72:394.54:551.59:575:32Waning Crescent14Thu
15Fri10:138.03:535.05:580.49:565:34Waning Crescent15Fri
16Sat12:295.311:14 AM8.65:055.06:51-0.89:555:36Waning Crescent16Sat
17Sun1:195.812:119.26:104.67:38-1.89:545:38New Moon17Sun
18Mon2:016.41:059.67:083.98:22-2.59:535:40New Moon18Mon
19Tue2:416.91:569.88:013.19:03-2.99:515:42New Moon19Tue
20Wed3:207.32:459.78:522.49:43-2.99:505:44Waxing Crescent20Wed
21Thu3:587.63:339.29:421.710:22-2.49:495:46Waxing Crescent21Thu
22Fri4:377.94:228.410:331.411:01-1.59:475:48Waxing Crescent22Fri
23Sat5:178.05:137.411:271.311:40-0.29:465:50Waxing Crescent23Sat
24Sun5:588.06:096.312:261.49:445:52First Quarter24Sun
25Mon6:427.97:155.312:191.21:321.69:435:54First Quarter25Mon
26Tue7:327.78:494.61:032.72:541.89:415:56First Quarter26Tue
27Wed8:307.610:484.61:554.04:231.69:395:58Waxing Gibbous27Wed
28Thu9:387.53:075.05:371.19:386:00Waxing Gibbous28Thu
29Fri12:155.010:46 AM7.64:355.46:340.69:366:02Waxing Gibbous29Fri
30Sat1:095.511:45 AM7.85:515.37:200.19:346:04Waxing Gibbous30Sat
31Sun1:475.912:358.06:474.97:57-0.39:326:07Full Moon31Sun
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 1:48 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 8% 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 Waxing Crescent (8% 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