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

TIDE TIMES for Saturday, August 1, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide (tomorrow) : in 2m at 10:32 pm (2.2 ft)
Next high tide : 4:19 am (7.7 ft)
Sunset today : 10:45 pm
Sunrise tomorrow : 6:40 am
Moon phase : Waning Gibbous (95% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Aug 1970

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:098.02:386.18:22-0.87:583.45:419:43New Moon1Sat
2Sun1:478.13:046.38:51-0.98:343.05:439:41New Moon2Sun
3Mon2:228.03:296.49:18-0.99:082.55:459:39New Moon3Mon
4Tue2:567.83:546.69:43-0.79:422.25:469:37Waxing Crescent4Tue
5Wed3:297.44:186.710:09-0.410:182.05:489:35Waxing Crescent5Wed
6Thu4:036.94:446.810:350.210:561.95:509:33Waxing Crescent6Thu
7Fri4:396.45:126.911:021.011:381.95:529:31Waxing Crescent7Fri
8Sat5:195.85:437.011:311.95:549:29First Quarter8Sat
9Sun6:075.16:217.112:262.012:032.85:569:27First Quarter9Sun
10Mon7:104.67:117.11:252.212:433.75:589:24First Quarter10Mon
11Tue8:464.28:167.22:412.11:424.66:009:22First Quarter11Tue
12Wed10:424.49:327.54:081.63:075.06:029:20Waxing Gibbous12Wed
13Thu11:584.910:458.05:240.64:344.86:049:18Waxing Gibbous13Thu
14Fri12:465.66:22-0.55:464.06:069:15Waxing Gibbous14Fri
15Sat1:266.27:10-1.46:483.06:089:13Full Moon15Sat
16Sun12:469.02:036.97:52-2.27:411.86:109:11Full Moon16Sun
17Mon1:389.22:397.58:31-2.58:310.76:129:08Full Moon17Mon
18Tue2:279.13:158.09:09-2.39:20-0.16:139:06Waning Gibbous18Tue
19Wed3:158.73:528.39:46-1.710:08-0.56:159:04Waning Gibbous19Wed
20Thu4:048.04:308.510:23-0.810:58-0.46:179:01Waning Gibbous20Thu
21Fri4:547.15:098.411:000.511:510.06:198:59Waning Gibbous21Fri
22Sat5:476.25:528.111:391.96:218:56Third Quarter22Sat
23Sun6:505.36:407.712:500.612:223.26:238:54Third Quarter23Sun
24Mon8:184.77:407.22:031.31:154.46:258:51Third Quarter24Mon
25Tue10:184.78:597.03:371.62:345.36:278:49Waning Crescent25Tue
26Wed11:425.010:207.05:011.54:205.46:298:46Waning Crescent26Wed
27Thu12:335.46:021.05:374.96:318:44Waning Crescent27Thu
28Fri1:095.86:480.56:294.16:338:41Waning Crescent28Fri
29Sat12:157.51:376.27:240.17:103.46:358:39New Moon29Sat
30Sun12:567.72:006.57:53-0.17:442.66:378:36New Moon30Sun
31Mon1:327.82:236.88:19-0.28:171.96:398:34New 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 1:25 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 95% 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 Gibbous (95% 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