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

TIDE TIMES for Monday, August 3, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide (tomorrow) : in 2h 22m at 11:54 pm (1.5 ft)
Next high tide : 5:38 am (6.7 ft)
Sunset today : 10:41 pm
Sunrise tomorrow : 6:44 am
Moon phase : Waning Gibbous (83% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Oct 1966

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:537.21:557.98:001.38:270.26:396:12Waning Gibbous1Sat
2Sun2:266.92:208.08:271.99:010.26:416:10Waning Gibbous2Sun
3Mon3:016.62:488.08:542.69:380.46:436:07Waning Gibbous3Mon
4Tue3:406.13:197.99:243.410:200.76:456:04Waning Gibbous4Tue
5Wed4:265.63:587.79:574.211:121.26:476:02Third Quarter5Wed
6Thu5:265.14:487.410:404.96:495:59Third Quarter6Thu
7Fri6:554.95:577.112:181.611:47 AM5.56:515:57Third Quarter7Fri
8Sat8:445.17:286.91:421.71:275.66:535:54Third Quarter8Sat
9Sun9:505.78:577.23:061.23:074.86:555:51Waning Crescent9Sun
10Mon10:346.410:087.64:090.54:203.46:575:49Waning Crescent10Mon
11Tue11:127.211:098.04:590.05:171.86:595:46Waning Crescent11Tue
12Wed11:498.05:43-0.46:060.27:015:44New Moon12Wed
13Thu12:028.212:248.76:23-0.46:53-1.17:035:41New Moon13Thu
14Fri12:528.21:009.27:02-0.17:37-1.97:055:39New Moon14Fri
15Sat1:408.11:369.57:390.68:21-2.27:075:36Waxing Crescent15Sat
16Sun2:287.72:149.48:171.49:06-1.97:095:34Waxing Crescent16Sun
17Mon3:177.12:529.18:562.59:52-1.27:115:31Waxing Crescent17Mon
18Tue4:096.53:338.59:373.510:43-0.27:135:29Waxing Crescent18Tue
19Wed5:085.94:197.810:224.511:410.97:155:27First Quarter19Wed
20Thu6:215.55:157.111:195.47:175:24First Quarter20Thu
21Fri7:595.46:316.412:551.712:425.97:195:22First Quarter21Fri
22Sat9:205.68:076.12:252.12:455.67:225:19First Quarter22Sat
23Sun10:106.09:286.23:352.04:014.77:245:17Waxing Gibbous23Sun
24Mon10:446.410:266.44:251.84:503.67:265:15Waxing Gibbous24Mon
25Tue11:126.811:126.65:021.75:292.57:285:12Waxing Gibbous25Tue
26Wed11:367.211:526.85:341.66:031.67:305:10Waxing Gibbous26Wed
27Thu12:007.76:021.76:340.77:325:08Full Moon27Thu
28Fri12:296.912:248.06:291.97:040.07:345:05Full Moon28Fri
29Sat1:046.912:508.36:562.27:35-0.47:365:03Full Moon29Sat
30Sun1:396.91:168.57:252.68:07-0.77:385:01Full Moon30Sun
31Mon2:156.71:458.67:553.18:42-0.67:404:59Waning Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9459085)

Common Questions About Chiachi Island (East Side), AK Tides

Show All
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 2:46 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 83% 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 (83% 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