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

TIDE TIMES for Saturday, July 18, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide (tomorrow) : 12:36 am (1.5 ft)
Next high tide : in 2h 38m at 6:29 pm (7.3 ft)
Sunset today : 11:07 pm
Sunrise tomorrow : 6:17 am
Moon phase : Waxing Crescent (24% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Jan 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:476.55:087.211:303.810:065:13Waning Gibbous1Wed
2Thu6:276.76:036.412:020.112:293.510:065:15Third Quarter2Thu
3Fri7:127.07:115.712:441.01:393.110:055:16Third Quarter3Fri
4Sat8:027.48:395.11:321.92:582.410:055:17Third Quarter4Sat
5Sun8:587.810:175.12:292.94:181.310:045:19Waning Crescent5Sun
6Mon9:578.311:445.43:343.75:270.210:045:20Waning Crescent6Mon
7Tue10:568.84:424.26:28-0.910:035:22Waning Crescent7Tue
8Wed12:515.911:53 AM9.35:484.37:21-1.810:025:23New Moon8Wed
9Thu1:456.412:489.66:494.18:09-2.310:025:25New Moon9Thu
10Fri2:316.81:399.77:443.78:53-2.510:015:26New Moon10Fri
11Sat3:147.02:289.68:353.39:35-2.410:005:28New Moon11Sat
12Sun3:557.23:139.29:233.010:15-2.09:595:30Waxing Crescent12Sun
13Mon4:347.23:588.510:102.910:52-1.39:585:32Waxing Crescent13Mon
14Tue5:127.24:427.710:582.811:28-0.49:575:33Waxing Crescent14Tue
15Wed5:497.15:276.811:482.99:565:35Waxing Crescent15Wed
16Thu6:267.06:165.812:030.712:423.09:555:37First Quarter16Thu
17Fri7:056.97:155.012:381.91:463.19:535:39First Quarter17Fri
18Sat7:496.88:404.51:163.03:053.09:525:41First Quarter18Sat
19Sun8:396.910:344.42:024.14:272.59:515:43First Quarter19Sun
20Mon9:367.03:044.95:321.99:495:45Waxing Gibbous20Mon
21Tue12:044.710:33 AM7.34:165.36:241.29:485:47Waxing Gibbous21Tue
22Wed12:585.211:26 AM7.65:235.47:070.59:475:49Waxing Gibbous22Wed
23Thu1:365.612:148.06:205.17:43-0.19:455:51Waxing Gibbous23Thu
24Fri2:085.912:578.47:064.78:16-0.79:435:53Full Moon24Fri
25Sat2:376.21:378.67:474.28:47-1.29:425:55Full Moon25Sat
26Sun3:066.52:158.78:263.69:18-1.59:405:57Full Moon26Sun
27Mon3:356.72:538.69:053.09:49-1.69:385:59Full Moon27Mon
28Tue4:047.03:328.39:452.510:21-1.39:376:01Waning Gibbous28Tue
29Wed4:357.24:137.810:292.110:53-0.89:356:03Waning Gibbous29Wed
30Thu5:077.44:597.111:161.911:280.29:336:05Waning Gibbous30Thu
31Fri5:437.65:516.212:091.79:316:08Third Quarter31Fri
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 9:32 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 transitional phase. Tonight's moon is 24% 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 Crescent (24% 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