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

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 3h 18m at 3:49 am (2.0 ft)
Next high tide : 9:33 am (4.4 ft)
Sunset today : 11:01 pm
Sunrise tomorrow : 6:24 am
Moon phase : First Quarter (63% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Jan 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:386.911:024.73:063.95:072.410:065:14Waxing Gibbous1Tue
2Wed10:247.34:044.45:571.510:065:15Waxing Gibbous2Wed
3Thu12:105.111:09 AM7.85:004.76:400.610:055:16Waxing Gibbous3Thu
4Fri1:015.511:53 AM8.25:534.87:19-0.210:055:18Waxing Gibbous4Fri
5Sat1:435.912:378.76:414.67:57-0.910:045:19Full Moon5Sat
6Sun2:216.21:199.07:264.48:34-1.510:045:20Full Moon6Sun
7Mon2:576.52:019.28:094.09:12-1.910:035:22Full Moon7Mon
8Tue3:336.72:439.28:523.79:49-2.110:025:24Waning Gibbous8Tue
9Wed4:106.83:269.09:373.310:28-1.910:015:25Waning Gibbous9Wed
10Thu4:487.04:128.510:253.011:07-1.410:015:27Waning Gibbous10Thu
11Fri5:287.15:017.711:182.811:48-0.610:005:28Waning Gibbous11Fri
12Sat6:117.35:576.812:172.69:595:30Third Quarter12Sat
13Sun6:577.47:045.912:310.41:262.49:585:32Third Quarter13Sun
14Mon7:487.68:305.21:191.72:462.09:575:34Third Quarter14Mon
15Tue8:477.910:125.02:152.84:111.39:565:36Waning Crescent15Tue
16Wed9:498.111:425.33:223.85:240.49:545:37Waning Crescent16Wed
17Thu10:508.44:344.46:25-0.49:535:39Waning Crescent17Thu
18Fri12:505.711:47 AM8.75:434.57:17-1.09:525:41Waning Crescent18Fri
19Sat1:416.212:408.96:444.38:01-1.49:505:43New Moon19Sat
20Sun2:236.51:289.07:364.08:41-1.69:495:45New Moon20Sun
21Mon3:016.82:118.98:213.69:17-1.69:485:47New Moon21Mon
22Tue3:356.92:508.79:023.39:50-1.39:465:49New Moon22Tue
23Wed4:076.93:288.39:413.110:21-0.99:455:51Waxing Crescent23Wed
24Thu4:386.94:047.710:202.910:51-0.39:435:53Waxing Crescent24Thu
25Fri5:076.84:417.011:002.911:200.59:415:55Waxing Crescent25Fri
26Sat5:376.85:206.311:432.911:501.49:405:57Waxing Crescent26Sat
27Sun6:096.86:055.512:313.09:386:00First Quarter27Sun
28Mon6:446.77:004.812:222.41:283.19:366:02First Quarter28Mon
29Tue7:276.88:234.312:583.42:413.19:356:04First Quarter29Tue
30Wed8:206.810:244.31:444.34:072.69:336:06First Quarter30Wed
31Thu9:247.02:525.15:201.99:316:08Waxing Gibbous31Thu
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 6:41 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 transitional phase. Tonight's moon is 63% 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 First Quarter (63% 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