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

TIDE TIMES for Sunday, June 21, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 1h 23m at 2:06 am (2.6 ft)
Next high tide : 7:42 am (6.1 ft)
Sunset today : 11:25 pm
Sunrise tomorrow : 5:50 am
Moon phase : First Quarter (49% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Nov 2021

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:377.16:221.36:572.09:446:55Waning Crescent1Mon
2Tue12:456.91:107.97:031.17:420.59:466:53Waning Crescent2Tue
3Wed1:377.31:458.77:431.08:25-0.99:486:51New Moon3Wed
4Thu2:267.52:219.38:231.29:09-2.09:506:49New Moon4Thu
5Fri3:147.62:589.89:031.59:53-2.59:526:47New Moon5Fri
6Sat4:037.53:389.99:442.110:38-2.69:546:45Waxing Crescent6Sat
7Sun3:537.33:219.89:262.710:27-2.28:575:43Waxing Crescent7Sun
8Mon4:466.94:089.310:123.511:19-1.48:595:41Waxing Crescent8Mon
9Tue5:466.55:008.611:054.29:015:39First Quarter9Tue
10Wed6:546.26:027.712:17-0.412:084.89:035:37First Quarter10Wed
11Thu8:126.17:186.91:250.51:335.19:055:35First Quarter11Thu
12Fri9:286.38:506.42:411.13:214.79:075:33First Quarter12Fri
13Sat10:266.710:156.23:531.44:433.69:095:32Waxing Gibbous13Sat
14Sun11:117.211:236.34:511.65:412.49:115:30Waxing Gibbous14Sun
15Mon11:487.65:371.86:271.49:135:28Waxing Gibbous15Mon
16Tue12:176.412:197.96:162.17:060.59:155:26Waxing Gibbous16Tue
17Wed1:046.512:488.26:512.47:40-0.19:175:25Full Moon17Wed
18Thu1:446.61:168.47:222.88:12-0.59:195:23Full Moon18Thu
19Fri2:216.61:448.67:533.28:43-0.79:215:22Full Moon19Fri
20Sat2:566.62:128.68:243.69:14-0.69:235:20Full Moon20Sat
21Sun3:316.52:428.58:554.09:47-0.49:255:19Waning Gibbous21Sun
22Mon4:076.33:148.39:284.410:22-0.19:275:18Waning Gibbous22Mon
23Tue4:466.13:497.910:024.811:010.49:295:16Waning Gibbous23Tue
24Wed5:305.84:277.510:425.111:450.89:315:15Waning Gibbous24Wed
25Thu6:205.65:147.011:315.49:335:14Third Quarter25Thu
26Fri7:175.66:126.512:331.212:355.59:345:13Third Quarter26Fri
27Sat8:195.87:266.01:291.61:575.29:365:11Third Quarter27Sat
28Sun9:156.28:525.82:291.83:244.39:385:10Third Quarter28Sun
29Mon10:026.910:135.93:292.04:352.99:405:09Waning Crescent29Mon
30Tue10:447.611:226.24:242.15:311.49:415:08Waning Crescent30Tue
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 4:54 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 neap phase. Tonight's moon is 49% 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 minimum.

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 (49% illuminated). This places Chiachi Island (East Side), AK in a neap tide cycle, so tidal ranges are near their weekly minimum 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