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

TIDE TIMES for Thursday, July 30, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 9:55 pm (2.7 ft)
Next high tide : in 1h 46m at 4:21 pm (6.4 ft)
Sunset today : 10:47 pm
Sunrise tomorrow : 6:38 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Mar 1973

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:437.24:524.35:550.47:266:11Waning Crescent1Thu
2Fri12:076.011:29 AM7.55:403.36:25-0.27:236:13Waning Crescent2Fri
3Sat12:326.512:117.86:202.36:53-0.67:216:15New Moon3Sat
4Sun12:587.112:507.96:581.37:22-0.77:186:17New Moon4Sun
5Mon1:257.61:297.97:350.37:52-0.67:166:19New Moon5Mon
6Tue1:548.12:097.78:14-0.38:23-0.27:136:21Waxing Crescent6Tue
7Wed2:248.52:507.38:54-0.78:570.57:116:23Waxing Crescent7Wed
8Thu2:588.73:356.79:38-0.89:321.37:086:25Waxing Crescent8Thu
9Fri3:368.64:256.010:27-0.410:122.37:066:27Waxing Crescent9Fri
10Sat4:208.45:265.411:230.110:593.37:036:29First Quarter10Sat
11Sun5:138.06:504.812:320.77:006:31First Quarter11Sun
12Mon6:207.68:414.912:014.22:011.06:586:33First Quarter12Mon
13Tue7:477.210:055.41:304.73:310.76:556:36Waxing Gibbous13Tue
14Wed9:167.310:596.03:164.34:360.26:536:38Waxing Gibbous14Wed
15Thu10:277.511:406.74:363.35:27-0.36:506:40Waxing Gibbous15Thu
16Fri11:257.75:352.16:08-0.66:476:42Waxing Gibbous16Fri
17Sat12:167.312:147.86:231.06:44-0.66:456:44Full Moon17Sat
18Sun12:487.712:587.77:040.17:17-0.46:426:46Full Moon18Sun
19Mon1:188.11:377.57:42-0.57:470.16:396:48Full Moon19Mon
20Tue1:478.22:157.28:17-0.78:170.76:376:50Waning Gibbous20Tue
21Wed2:158.22:516.88:52-0.68:461.56:346:52Waning Gibbous21Wed
22Thu2:448.13:286.39:27-0.29:152.36:326:54Waning Gibbous22Thu
23Fri3:137.94:065.710:050.39:463.16:296:56Waning Gibbous23Fri
24Sat3:467.54:495.210:461.010:193.86:266:58Waning Gibbous24Sat
25Sun4:247.15:454.711:361.811:004.56:247:00Third Quarter25Sun
26Mon5:126.67:124.412:412.36:217:02Third Quarter26Mon
27Tue6:166.29:044.512:005.12:092.46:187:04Third Quarter27Tue
28Wed7:426.010:055.01:355.23:292.06:167:06Third Quarter28Wed
29Thu9:056.110:415.53:164.74:221.56:137:08Waning Crescent29Thu
30Fri10:096.411:126.24:233.65:011.06:117:10Waning Crescent30Fri
31Sat11:026.811:416.95:132.45:360.56:087:12Waning Crescent31Sat
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 7:08 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 spring phase. Tonight's moon is 99% 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 Full Moon (99% 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