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

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 1h 05m at 5:10 am (1.9 ft)
Next high tide : 11:19 am (4.3 ft)
Sunset today : 10:59 pm
Sunrise tomorrow : 6:26 am
Moon phase : Waxing Gibbous (72% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Dec 1982

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:227.212:529.96:572.57:54-2.68:424:08Full Moon1Wed
2Thu2:097.31:3510.07:422.88:39-2.78:444:07Waning Gibbous2Thu
3Fri2:587.22:219.78:283.19:27-2.38:454:06Waning Gibbous3Fri
4Sat3:507.03:119.29:183.410:17-1.68:474:06Waning Gibbous4Sat
5Sun4:456.84:058.410:153.811:11-0.88:484:05Waning Gibbous5Sun
6Mon5:446.75:077.511:214.18:504:04Third Quarter6Mon
7Tue6:496.76:206.612:090.212:424.18:514:04Third Quarter7Tue
8Wed7:546.97:466.01:121.12:173.68:524:03Third Quarter8Wed
9Thu8:537.39:135.82:181.73:362.68:544:03Waning Crescent9Thu
10Fri9:427.610:265.93:192.34:371.58:554:03Waning Crescent10Fri
11Sat10:258.011:266.14:132.75:270.68:564:02Waning Crescent11Sat
12Sun11:048.35:003.06:09-0.18:574:02Waning Crescent12Sun
13Mon12:156.311:39 AM8.55:423.36:46-0.68:584:02New Moon13Mon
14Tue12:586.512:138.66:203.67:20-0.88:594:02New Moon14Tue
15Wed1:356.612:468.76:563.87:53-0.99:004:02New Moon15Wed
16Thu2:116.61:198.67:313.98:25-0.89:014:02New Moon16Thu
17Fri2:456.61:528.58:054.18:57-0.69:024:02Waxing Crescent17Fri
18Sat3:206.52:268.28:414.29:31-0.39:034:03Waxing Crescent18Sat
19Sun3:566.33:017.89:194.410:070.19:034:03Waxing Crescent19Sun
20Mon4:346.23:407.210:014.610:450.69:044:03Waxing Crescent20Mon
21Tue5:156.14:256.710:504.711:261.19:054:04First Quarter21Tue
22Wed6:006.15:186.011:504.69:054:04First Quarter22Wed
23Thu6:496.36:275.512:121.71:014.39:054:05First Quarter23Thu
24Fri7:426.77:525.21:052.32:203.59:064:06First Quarter24Fri
25Sat8:347.29:175.32:042.83:312.49:064:06Waxing Gibbous25Sat
26Sun9:237.810:315.73:033.14:301.19:064:07Waxing Gibbous26Sun
27Mon10:128.511:336.14:013.35:22-0.39:064:08Waxing Gibbous27Mon
28Tue11:009.24:563.36:11-1.59:064:09Full Moon28Tue
29Wed12:266.611:48 AM9.75:493.26:58-2.49:064:10Full Moon29Wed
30Thu1:157.012:3710.06:403.07:44-2.99:064:11Full Moon30Thu
31Fri2:027.21:2510.17:302.88:31-3.09:064:12Full Moon31Fri
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 8:14 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 transitional phase. Tonight's moon is 72% 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 Waxing Gibbous (72% 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