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

TIDE TIMES for Saturday, August 1, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 11:04 am (-1.0 ft)
Next high tide : in 4h 41m at 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 - Jul 1970

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:415.57:16-0.96:364.14:5510:24New Moon1Wed
2Thu12:338.22:235.87:59-1.27:244.04:5610:23New Moon2Thu
3Fri1:178.33:005.98:37-1.38:073.94:5710:23New Moon3Fri
4Sat1:588.33:346.09:12-1.38:463.64:5810:22New Moon4Sat
5Sun2:358.14:066.09:44-1.29:243.44:5910:22Waxing Crescent5Sun
6Mon3:127.94:366.010:15-1.010:033.35:0010:21Waxing Crescent6Mon
7Tue3:487.55:066.110:45-0.710:433.25:0110:20Waxing Crescent7Tue
8Wed4:256.95:366.111:15-0.211:263.15:0310:19Waxing Crescent8Wed
9Thu5:046.36:076.211:460.55:0410:18First Quarter9Thu
10Fri5:485.66:426.412:143.012:191.35:0510:17First Quarter10Fri
11Sat6:405.07:226.61:102.912:552.15:0610:16First Quarter11Sat
12Sun7:484.58:096.82:152.61:383.05:0810:15First Quarter12Sun
13Mon9:184.39:047.23:292.12:353.85:0910:14Waxing Gibbous13Mon
14Tue10:544.410:047.64:411.33:424.35:1110:13Waxing Gibbous14Tue
15Wed12:094.85:450.44:514.55:1210:12Waxing Gibbous15Wed
16Thu1:055.36:40-0.75:554.25:1310:10Waxing Gibbous16Thu
17Fri12:008.71:505.87:28-1.76:553.65:1510:09Full Moon17Fri
18Sat12:549.12:326.38:13-2.47:492.95:1710:08Full Moon18Sat
19Sun1:469.43:116.78:55-2.98:412.25:1810:06Full Moon19Sun
20Mon2:369.33:517.19:36-3.09:321.55:2010:05Waning Gibbous20Mon
21Tue3:258.94:317.410:16-2.610:241.15:2110:03Waning Gibbous21Tue
22Wed4:158.25:117.610:56-1.911:180.95:2310:02Waning Gibbous22Wed
23Thu5:077.35:537.711:36-0.75:2510:00Third Quarter23Thu
24Fri6:036.36:377.712:170.912:170.65:269:58Third Quarter24Fri
25Sat7:085.47:277.61:221.11:012.05:289:57Third Quarter25Sat
26Sun8:324.78:247.52:391.21:543.35:309:55Third Quarter26Sun
27Mon10:184.59:297.44:031.13:014.35:329:53Waning Crescent27Mon
28Tue11:484.810:347.55:180.74:204.85:349:51Waning Crescent28Tue
29Wed12:505.26:190.35:344.85:359:49Waning Crescent29Wed
30Thu1:345.67:08-0.26:324.45:379:47Waning Crescent30Thu
31Fri12:257.92:085.97:48-0.57:194.05:399:45New Moon31Fri
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 7:41 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