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

TIDE TIMES for Saturday, July 4, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 3h 56m at 12:08 pm (-0.7 ft)
Next high tide : 6:29 pm (6.2 ft)
Sunset today : 11:22 pm
Sunrise tomorrow : 5:59 am
Moon phase : Waning Gibbous (79% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Sep 2003

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:076.86:208.212:120.012:131.17:419:31First Quarter1Mon
2Tue7:046.07:068.11:070.312:552.47:439:28First Quarter2Tue
3Wed8:165.38:037.82:110.71:463.67:459:26First Quarter3Wed
4Thu9:574.99:167.63:321.02:544.67:479:23First Quarter4Thu
5Fri11:435.110:407.55:050.94:285.07:499:21Waxing Gibbous5Fri
6Sat12:535.76:220.45:594.67:509:18Waxing Gibbous6Sat
7Sun1:426.27:20-0.17:073.87:529:15Waxing Gibbous7Sun
8Mon1:008.02:216.78:07-0.68:002.87:549:13Full Moon8Mon
9Tue1:518.22:547.08:46-0.88:442.07:569:10Full Moon9Tue
10Wed2:358.33:247.39:19-0.89:221.37:589:08Full Moon10Wed
11Thu3:158.13:517.59:49-0.69:580.88:009:05Full Moon11Thu
12Fri3:527.84:177.610:17-0.110:330.68:029:02Waning Gibbous12Fri
13Sat4:287.44:437.610:440.611:070.68:049:00Waning Gibbous13Sat
14Sun5:036.95:097.611:111.511:420.88:068:57Waning Gibbous14Sun
15Mon5:406.45:377.411:392.48:088:54Waning Gibbous15Mon
16Tue6:205.86:097.212:211.212:083.48:108:52Third Quarter16Tue
17Wed7:075.26:476.91:051.812:414.38:128:49Third Quarter17Wed
18Thu8:134.77:386.61:592.41:235.18:148:46Third Quarter18Thu
19Fri10:114.58:506.43:152.72:325.78:168:44Third Quarter19Fri
20Sat12:004.84:532.54:155.88:188:41Waning Crescent20Sat
21Sun12:475.36:061.95:445.28:198:38Waning Crescent21Sun
22Mon1:195.96:551.16:444.18:218:36Waning Crescent22Mon
23Tue12:317.41:476.57:340.37:312.98:238:33Waning Crescent23Tue
24Wed1:217.92:167.18:09-0.38:151.68:258:31New Moon24Wed
25Thu2:078.22:467.78:43-0.78:560.48:278:28New Moon25Thu
26Fri2:528.33:178.39:17-0.79:38-0.68:298:25New Moon26Fri
27Sat3:368.33:508.89:52-0.310:21-1.38:318:23Waxing Crescent27Sat
28Sun4:227.94:269.010:270.411:06-1.58:338:20Waxing Crescent28Sun
29Mon5:107.45:049.011:051.311:55-1.28:358:17Waxing Crescent29Mon
30Tue6:026.75:478.811:462.48:378:15Waxing Crescent30Tue
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 3:18 pm — 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 79% 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 Waning Gibbous (79% 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