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

TIDE TIMES for Saturday, July 25, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 2h 30m at 6:15 pm (5.0 ft)
Next high tide (tomorrow) : 12:20 am (7.3 ft)
Sunset today : 10:56 pm
Sunrise tomorrow : 6:29 am
Moon phase : Waxing Gibbous (87% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Dec 1978

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:527.31:229.77:282.58:21-2.38:424:08New Moon1Fri
2Sat2:377.42:069.68:142.69:06-2.28:444:07Waxing Crescent2Sat
3Sun3:247.32:549.19:022.89:52-1.78:454:06Waxing Crescent3Sun
4Mon4:147.23:458.59:553.110:42-1.08:474:06Waxing Crescent4Mon
5Tue5:087.14:427.710:563.311:35-0.18:484:05First Quarter5Tue
6Wed6:067.15:496.812:073.48:504:04First Quarter6Wed
7Thu7:097.27:106.112:330.91:333.28:514:04First Quarter7Thu
8Fri8:127.48:405.81:381.73:002.58:524:03Waxing Gibbous8Fri
9Sat9:107.810:015.92:442.34:091.58:544:03Waxing Gibbous9Sat
10Sun10:018.111:066.13:462.75:050.68:554:03Waxing Gibbous10Sun
11Mon10:478.44:413.05:52-0.28:564:02Waxing Gibbous11Mon
12Tue12:006.411:28 AM8.75:293.16:34-0.78:574:02Full Moon12Tue
13Wed12:456.612:078.86:123.27:10-1.08:584:02Full Moon13Wed
14Thu1:256.812:438.86:523.37:45-1.08:594:02Full Moon14Thu
15Fri2:016.81:178.77:283.48:17-1.09:004:02Full Moon15Fri
16Sat2:356.81:518.58:043.58:49-0.79:014:02Waning Gibbous16Sat
17Sun3:096.82:258.28:403.79:22-0.49:024:02Waning Gibbous17Sun
18Mon3:436.63:017.79:183.89:550.19:034:03Waning Gibbous18Mon
19Tue4:196.53:397.210:004.010:310.69:034:03Waning Gibbous19Tue
20Wed4:576.44:216.610:464.211:091.39:044:03Third Quarter20Wed
21Thu5:386.45:115.911:414.311:522.09:054:04Third Quarter21Thu
22Fri6:256.56:145.412:474.19:054:04Third Quarter22Fri
23Sat7:186.77:355.112:422.62:053.69:054:05Third Quarter23Sat
24Sun8:147.19:025.11:413.13:182.79:064:05Waning Crescent24Sun
25Mon9:077.610:165.42:433.54:191.69:064:06Waning Crescent25Mon
26Tue9:588.211:175.93:443.55:100.49:064:07Waning Crescent26Tue
27Wed10:478.84:413.45:57-0.89:064:08Waning Crescent27Wed
28Thu12:096.511:35 AM9.35:353.16:42-1.79:064:09New Moon28Thu
29Fri12:556.912:239.76:262.77:26-2.49:064:10New Moon29Fri
30Sat1:407.31:109.97:152.48:09-2.89:064:11New Moon30Sat
31Sun2:247.61:579.78:042.18:54-2.79:064:12Waxing 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 9:17 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 spring phase. Tonight's moon is 87% 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 Gibbous (87% 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