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

TIDE TIMES for Sunday, July 12, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 7:49 am (-1.6 ft)
Next high tide : in 3h 24m at 12:17 am (8.8 ft)
Sunset today : 11:16 pm
Sunrise tomorrow : 6:07 am
Moon phase : Waning Crescent (10% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Apr 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:366.610:275.52:334.43:561.07:058:14First Quarter1Thu
2Fri10:016.811:196.34:063.64:590.57:028:16Waxing Gibbous2Fri
3Sat11:137.15:192.35:520.07:008:18Waxing Gibbous3Sat
4Sun12:027.11:147.57:180.77:38-0.37:579:20Waxing Gibbous4Sun
5Mon1:437.92:097.78:10-0.78:22-0.47:559:22Full Moon5Mon
6Tue2:238.72:597.88:58-1.89:03-0.27:529:24Full Moon6Tue
7Wed3:039.13:487.79:43-2.59:440.37:499:26Full Moon7Wed
8Thu3:429.34:357.410:29-2.610:240.97:479:29Waning Gibbous8Thu
9Fri4:239.25:236.911:14-2.311:061.77:449:31Waning Gibbous9Fri
10Sat5:058.96:146.412:01-1.57:429:33Waning Gibbous10Sat
11Sun5:498.27:095.812:52-0.57:399:35Waning Gibbous11Sun
12Mon6:387.58:155.412:373.41:480.57:379:37Third Quarter12Mon
13Tue7:356.79:365.21:354.12:571.37:349:39Third Quarter13Tue
14Wed8:486.110:545.32:544.54:171.77:329:41Third Quarter14Wed
15Thu10:165.711:505.64:394.35:261.87:299:43Third Quarter15Thu
16Fri11:335.75:573.56:171.77:279:45Waning Crescent16Fri
17Sat12:316.112:335.96:502.66:581.77:249:47Waning Crescent17Sat
18Sun1:036.51:216.17:321.77:321.67:229:49Waning Crescent18Sun
19Mon1:326.92:026.38:080.88:031.77:199:51Waning Crescent19Mon
20Tue2:007.42:396.48:400.18:331.87:179:53New Moon20Tue
21Wed2:287.73:156.59:11-0.59:031.97:149:55New Moon21Wed
22Thu2:568.03:496.59:43-0.89:332.27:129:57New Moon22Thu
23Fri3:268.24:256.410:16-1.010:052.57:099:59New Moon23Fri
24Sat3:588.25:026.210:52-1.010:392.87:0710:01Waxing Crescent24Sat
25Sun4:318.15:435.911:31-0.911:163.27:0510:03Waxing Crescent25Sun
26Mon5:097.96:305.612:14-0.67:0210:05Waxing Crescent26Mon
27Tue5:547.67:245.41:03-0.27:0010:07First Quarter27Tue
28Wed6:477.18:275.412:533.81:580.26:5810:09First Quarter28Wed
29Thu7:536.69:375.62:034.03:020.66:5510:11First Quarter29Thu
30Fri9:156.210:406.23:283.64:090.86:5310:13First Quarter30Fri
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 4:03 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 spring phase. Tonight's moon is 10% 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 Waning Crescent (10% 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