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

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 2:51 pm (3.6 ft)
Next high tide : in 1h 33m at 9:33 am (4.4 ft)
Sunset today : 11:01 pm
Sunrise tomorrow : 6:24 am
Moon phase : First Quarter (63% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Jul 1984

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:038.95:346.411:11-2.510:592.95:5611:24Waxing Crescent1Sun
2Mon4:508.66:186.511:55-2.311:522.85:5711:23Waxing Crescent2Mon
3Tue5:418.07:046.612:39-1.75:5811:23Waxing Crescent3Tue
4Wed6:367.27:526.812:512.61:25-0.95:5911:22First Quarter4Wed
5Thu7:396.48:447.01:582.42:140.16:0011:21First Quarter5Thu
6Fri8:525.69:387.33:142.03:081.26:0111:20First Quarter6Fri
7Sat10:195.110:347.64:361.44:072.16:0211:20Waxing Gibbous7Sat
8Sun11:475.011:297.95:500.55:092.96:0311:19Waxing Gibbous8Sun
9Mon1:035.26:53-0.36:103.46:0511:18Waxing Gibbous9Mon
10Tue12:228.22:055.67:47-0.97:093.66:0611:17Waxing Gibbous10Tue
11Wed1:128.42:545.98:34-1.48:023.66:0711:16Full Moon11Wed
12Thu1:598.53:376.19:17-1.68:493.56:0911:15Full Moon12Thu
13Fri2:428.64:156.29:56-1.69:313.46:1011:13Full Moon13Fri
14Sat3:238.44:516.310:32-1.510:113.36:1111:12Full Moon14Sat
15Sun4:018.25:256.211:05-1.310:503.26:1311:11Waning Gibbous15Sun
16Mon4:387.85:576.211:38-0.911:303.16:1411:10Waning Gibbous16Mon
17Tue5:167.36:296.212:10-0.36:1611:08Waning Gibbous17Tue
18Wed5:556.77:026.212:133.112:420.36:1811:07Waning Gibbous18Wed
19Thu6:376.07:386.212:593.11:151.16:1911:05Third Quarter19Thu
20Fri7:265.38:176.31:523.11:521.96:2111:04Third Quarter20Fri
21Sat8:274.79:036.52:553.02:342.86:2211:02Third Quarter21Sat
22Sun9:494.49:566.74:082.73:273.66:2411:01Third Quarter22Sun
23Mon11:234.410:517.15:212.04:294.16:2610:59Waning Crescent23Mon
24Tue12:434.76:251.25:354.46:2810:57Waning Crescent24Tue
25Wed1:425.27:180.26:364.36:2910:55Waning Crescent25Wed
26Thu12:408.12:285.78:06-0.87:323.96:3110:54New Moon26Thu
27Fri1:328.63:096.18:50-1.68:243.36:3310:52New Moon27Fri
28Sat2:219.03:486.59:31-2.39:132.76:3510:50New Moon28Sat
29Sun3:089.24:276.810:11-2.710:022.06:3710:48New Moon29Sun
30Mon3:569.15:067.110:51-2.610:511.56:3810:46Waxing Crescent30Mon
31Tue4:448.75:467.411:31-2.211:431.26:4010:44Waxing Crescent31Tue
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 12:12 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 63% 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 First Quarter (63% 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