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

TIDE TIMES for Sunday, August 2, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide (tomorrow) : in 45m at 11:11 pm (1.8 ft)
Next high tide : 4:57 am (7.3 ft)
Sunset today : 10:43 pm
Sunrise tomorrow : 6:42 am
Moon phase : Waning Gibbous (90% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Sep 1968

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:034.87:577.62:231.11:345.15:427:30Waxing Gibbous1Sun
2Mon10:305.39:227.83:520.63:145.05:447:27Waxing Gibbous2Mon
3Tue11:245.910:328.14:580.04:364.25:467:25Waxing Gibbous3Tue
4Wed12:056.45:49-0.75:373.15:477:22Waxing Gibbous4Wed
5Thu12:406.96:30-1.06:272.15:497:19Full Moon5Thu
6Fri12:198.41:127.37:07-1.27:091.25:517:17Full Moon6Fri
7Sat1:028.31:427.67:39-0.97:490.65:537:14Full Moon7Sat
8Sun1:428.02:107.88:09-0.58:260.25:557:12Waning Gibbous8Sun
9Mon2:217.62:377.98:370.39:020.25:577:09Waning Gibbous9Mon
10Tue2:587.03:047.89:051.29:380.45:597:06Waning Gibbous10Tue
11Wed3:366.43:327.69:322.210:170.96:017:04Waning Gibbous11Wed
12Thu4:165.84:037.410:013.311:001.66:037:01Third Quarter12Thu
13Fri5:025.24:397.010:324.211:532.36:056:58Third Quarter13Fri
14Sat6:064.65:286.711:105.16:076:56Third Quarter14Sat
15Sun8:124.46:376.41:092.812:125.86:096:53Third Quarter15Sun
16Mon10:124.78:096.42:562.71:596.06:116:50Waning Crescent16Mon
17Tue10:555.29:276.74:112.13:405.56:136:48Waning Crescent17Tue
18Wed11:235.710:267.24:581.34:414.56:156:45Waning Crescent18Wed
19Thu11:486.211:147.65:340.65:273.36:176:42Waning Crescent19Thu
20Fri12:136.86:050.06:072.16:186:40New Moon20Fri
21Sat12:397.46:35-0.46:460.96:206:37New Moon21Sat
22Sun12:398.01:068.07:06-0.47:25-0.16:226:35New Moon22Sun
23Mon1:218.01:368.57:38-0.18:05-0.96:246:32New Moon23Mon
24Tue2:047.82:088.88:100.48:47-1.36:266:29Waxing Crescent24Tue
25Wed2:487.32:439.08:451.39:32-1.26:286:27Waxing Crescent25Wed
26Thu3:376.83:228.99:222.310:23-0.76:306:24Waxing Crescent26Thu
27Fri4:326.14:088.610:043.411:220.16:326:21First Quarter27Fri
28Sat5:415.55:038.010:544.46:346:19First Quarter28Sat
29Sun7:175.16:177.512:360.812:045.26:366:16First Quarter29Sun
30Mon9:045.37:537.12:111.21:495.46:386:13First Quarter30Mon
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 2:04 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 90% 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 (90% 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