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

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 4h 40m at 4:29 am (1.3 ft)
Next high tide : 10:22 am (4.5 ft)
Sunset today : 11:19 pm
Sunrise tomorrow : 6:03 am
Moon phase : Third Quarter (39% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Apr 1997

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:446.89:385.31:394.13:051.17:058:14Third Quarter1Tue
2Wed9:106.810:485.93:094.04:220.77:028:16Waning Crescent2Wed
3Thu10:307.111:416.64:343.25:250.17:008:18Waning Crescent3Thu
4Fri11:387.55:431.96:17-0.46:578:20Waning Crescent4Fri
5Sat12:277.412:367.86:400.57:04-0.86:548:23New Moon5Sat
6Sun1:088.12:298.08:30-0.78:47-0.87:529:25New Moon6Sun
7Mon2:488.63:178.09:17-1.69:27-0.67:499:27New Moon7Mon
8Tue3:278.94:047.810:01-2.010:07-0.17:479:29New Moon8Tue
9Wed4:069.04:507.410:45-2.010:460.77:449:31Waxing Crescent9Wed
10Thu4:458.85:376.911:28-1.611:261.67:429:33Waxing Crescent10Thu
11Fri5:248.36:266.312:14-0.97:399:35Waxing Crescent11Fri
12Sat6:067.87:195.712:082.51:020.07:369:37First Quarter12Sat
13Sun6:537.18:245.312:553.41:570.97:349:39First Quarter13Sun
14Mon7:486.49:475.11:514.23:041.67:319:41First Quarter14Mon
15Tue8:595.911:075.33:094.64:252.07:299:43First Quarter15Tue
16Wed10:255.74:524.45:351.97:269:45Waxing Gibbous16Wed
17Thu12:025.611:38 AM5.86:053.76:261.77:249:47Waxing Gibbous17Thu
18Fri12:426.012:356.06:562.87:061.57:219:49Waxing Gibbous18Fri
19Sat1:146.51:226.37:361.97:411.37:199:51Waxing Gibbous19Sat
20Sun1:436.92:036.58:121.08:121.27:179:53Waxing Gibbous20Sun
21Mon2:127.32:416.78:440.28:431.27:149:55Full Moon21Mon
22Tue2:407.73:176.89:17-0.49:141.37:129:57Full Moon22Tue
23Wed3:108.03:536.89:50-0.99:461.57:099:59Full Moon23Wed
24Thu3:408.24:316.710:25-1.110:201.87:0710:01Waning Gibbous24Thu
25Fri4:138.25:116.511:02-1.210:562.27:0510:03Waning Gibbous25Fri
26Sat4:498.25:556.211:44-1.011:362.77:0210:05Waning Gibbous26Sat
27Sun5:297.96:455.912:30-0.77:0010:07Waning Gibbous27Sun
28Mon6:177.57:455.612:233.21:22-0.26:5810:09Third Quarter28Mon
29Tue7:147.08:555.61:223.62:230.26:5510:11Third Quarter29Tue
30Wed8:266.610:095.92:353.83:330.56:5310:13Third Quarter30Wed
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 7:25 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 transitional phase. Tonight's moon is 39% 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 Third Quarter (39% 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