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

TIDE TIMES for Sunday, June 21, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide (tomorrow) : 3:22 am (2.4 ft)
Next high tide : in 2h 13m at 8:49 pm (6.7 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 - Aug 2020

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:458.32:266.08:07-1.07:403.56:4310:42Full Moon1Sat
2Sun1:378.53:096.38:52-1.48:303.26:4510:40Full Moon2Sun
3Mon2:258.63:466.69:32-1.69:152.86:4610:38Full Moon3Mon
4Tue3:078.64:206.710:07-1.59:552.56:4810:36Full Moon4Tue
5Wed3:468.34:526.710:40-1.310:332.36:5010:33Waning Gibbous5Wed
6Thu4:238.05:236.711:11-0.811:112.26:5210:31Waning Gibbous6Thu
7Fri5:007.55:526.711:41-0.211:502.26:5410:29Waning Gibbous7Fri
8Sat5:376.86:236.612:110.56:5610:27Waning Gibbous8Sat
9Sun6:176.26:556.612:322.312:421.46:5810:25Third Quarter9Sun
10Mon7:015.57:326.51:192.51:162.37:0010:22Third Quarter10Mon
11Tue7:564.98:176.52:132.71:553.27:0210:20Third Quarter11Tue
12Wed9:124.59:126.63:212.82:464.17:0410:18Third Quarter12Wed
13Thu10:564.410:176.84:432.53:544.67:0610:16Waning Crescent13Thu
14Fri12:244.75:581.85:094.87:0810:13Waning Crescent14Fri
15Sat1:215.26:561.06:174.57:1010:11Waning Crescent15Sat
16Sun12:197.72:035.77:430.07:143.97:1110:09Waning Crescent16Sun
17Mon1:128.22:406.28:24-0.98:053.17:1310:06New Moon17Mon
18Tue2:008.73:146.79:02-1.68:512.27:1510:04New Moon18Tue
19Wed2:468.93:497.29:40-2.09:371.47:1710:01New Moon19Wed
20Thu3:319.04:257.610:17-2.110:220.77:199:59Waxing Crescent20Thu
21Fri4:178.75:027.910:54-1.811:100.37:219:56Waxing Crescent21Fri
22Sat5:048.25:418.011:32-1.07:239:54Waxing Crescent22Sat
23Sun5:547.46:228.112:000.212:130.07:259:52Waxing Crescent23Sun
24Mon6:506.57:088.012:550.312:561.37:279:49First Quarter24Mon
25Tue7:565.78:017.81:570.71:442.67:299:47First Quarter25Tue
26Wed9:215.19:067.53:131.02:453.77:319:44First Quarter26Wed
27Thu11:065.110:237.54:421.04:054.47:339:41Waxing Gibbous27Thu
28Fri12:305.46:020.75:334.57:359:39Waxing Gibbous28Fri
29Sat1:285.97:050.26:464.17:379:36Waxing Gibbous29Sat
30Sun12:407.82:116.37:54-0.27:423.47:399:34Waxing Gibbous30Sun
31Mon1:338.02:476.68:35-0.68:262.87:419:31Full Moon31Mon
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 12:05 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