55.8433’ N, 159.1050’ W

Chiachi Island (East Side), AK

44°
H -°
L 40°
W
11mph
Low tide
4:54 am

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

TIDE TIMES for Tuesday, October 20, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 7h 33m at 4:54 am (2.4 ft)
Next high tide : 11:36 am (5.6 ft)
Sunset today : 7:25 pm
Sunrise tomorrow : 9:16 am
Moon phase : First Quarter (61% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Sep 1998

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:414.910:586.95:192.24:494.67:419:30Waxing Gibbous1Tue
2Wed12:405.56:221.46:004.17:439:28Waxing Gibbous2Wed
3Thu12:017.41:246.07:100.56:583.27:459:25Waxing Gibbous3Thu
4Fri12:557.92:026.77:53-0.37:482.27:479:23Full Moon4Fri
5Sat1:448.42:387.38:32-1.08:341.27:499:20Full Moon5Sat
6Sun2:318.73:147.89:10-1.49:190.37:519:17Full Moon6Sun
7Mon3:168.83:518.39:48-1.410:04-0.47:539:15Full Moon7Mon
8Tue4:028.64:298.610:26-1.110:50-0.87:559:12Waning Gibbous8Tue
9Wed4:498.25:098.711:06-0.411:39-0.77:579:10Waning Gibbous9Wed
10Thu5:397.55:538.511:480.57:599:07Waning Gibbous10Thu
11Fri6:346.86:418.212:31-0.312:331.78:019:04Third Quarter11Fri
12Sat7:376.17:367.81:300.31:262.88:029:02Third Quarter12Sat
13Sun8:585.68:447.42:400.92:313.88:048:59Third Quarter13Sun
14Mon10:355.510:057.24:071.33:574.38:068:56Third Quarter14Mon
15Tue11:565.811:237.25:311.15:294.18:088:54Waning Crescent15Tue
16Wed12:546.26:350.86:383.48:108:51Waning Crescent16Wed
17Thu12:287.41:376.77:250.47:312.78:128:48Waning Crescent17Thu
18Fri1:207.62:137.08:060.28:142.08:148:46New Moon18Fri
19Sat2:047.82:447.38:400.18:501.48:168:43New Moon19Sat
20Sun2:427.83:117.59:110.29:240.98:188:41New Moon20Sun
21Mon3:187.73:377.79:390.49:550.68:208:38New Moon21Mon
22Tue3:517.64:037.710:060.810:270.58:228:35Waxing Crescent22Tue
23Wed4:257.34:307.710:341.311:000.68:248:33Waxing Crescent23Wed
24Thu4:596.94:587.611:031.911:350.98:268:30Waxing Crescent24Thu
25Fri5:356.55:297.411:342.68:288:27Waxing Crescent25Fri
26Sat6:156.06:057.212:141.312:083.48:308:25Waxing Crescent26Sat
27Sun7:035.56:486.912:581.712:484.18:328:22First Quarter27Sun
28Mon8:075.17:446.61:532.21:404.78:348:19First Quarter28Mon
29Tue9:355.08:586.53:022.42:555.18:368:17First Quarter29Tue
30Wed11:015.310:216.64:232.24:244.88:378:14Waxing Gibbous30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9459085)

Common Questions About Chiachi Island (East Side), AK Tides

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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 61% 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 (61% 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