55.8433’ N, 159.1050’ W

Chiachi Island (East Side), AK

41°
H 43°
L 37°
W
8mph
High tide
11:36 am

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

TIDE TIMES for Tuesday, October 20, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 5:14 pm (5.0 ft)
Next high tide : in 5h 56m at 11:36 am (5.6 ft)
Sunset today : 7:23 pm
Sunrise tomorrow : 9:18 am
Moon phase : Waxing Gibbous (70% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Feb 1826

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:427.910:405.02:113.84:221.18:335:08Third Quarter1Wed
2Thu9:587.911:585.53:354.35:360.48:315:10Waning Crescent2Thu
3Fri11:088.25:004.36:33-0.38:295:12Waning Crescent3Fri
4Sat12:526.112:088.46:103.77:20-0.98:275:14Waning Crescent4Sat
5Sun1:346.612:598.67:063.07:59-1.38:255:17Waning Crescent5Sun
6Mon2:117.01:438.67:522.48:34-1.48:235:19New Moon6Mon
7Tue2:437.42:238.58:331.89:05-1.28:215:21New Moon7Tue
8Wed3:137.53:008.19:101.59:34-0.88:195:23New Moon8Wed
9Thu3:427.63:357.79:461.310:03-0.28:175:25New Moon9Thu
10Fri4:107.64:107.110:221.310:310.58:145:27Waxing Crescent10Fri
11Sat4:397.64:466.510:591.510:591.48:125:30Waxing Crescent11Sat
12Sun5:097.45:245.811:401.911:302.38:105:32Waxing Crescent12Sun
13Mon5:427.26:085.212:262.38:085:34Waxing Crescent13Mon
14Tue6:227.07:074.612:033.21:232.78:065:36First Quarter14Tue
15Wed7:126.88:444.212:444.12:402.98:035:38First Quarter15Wed
16Thu8:196.710:474.41:444.84:142.58:015:40First Quarter16Thu
17Fri9:366.911:534.93:115.15:251.87:595:43First Quarter17Fri
18Sat10:447.24:374.96:130.87:575:45Waxing Gibbous18Sat
19Sun12:335.511:41 AM7.75:444.16:52-0.17:545:47Waxing Gibbous19Sun
20Mon1:066.212:318.16:373.17:28-0.87:525:49Waxing Gibbous20Mon
21Tue1:386.81:178.57:242.08:02-1.37:495:51Full Moon21Tue
22Wed2:097.52:028.68:080.98:37-1.67:475:53Full Moon22Wed
23Thu2:428.02:458.58:510.19:12-1.47:455:56Full Moon23Thu
24Fri3:178.53:308.29:35-0.59:48-0.97:425:58Full Moon24Fri
25Sat3:538.74:167.610:21-0.810:26-0.17:406:00Waning Gibbous25Sat
26Sun4:328.85:066.911:10-0.611:071.07:376:02Waning Gibbous26Sun
27Mon5:168.66:026.112:04-0.17:356:04Waning Gibbous27Mon
28Tue6:058.37:115.31:080.67:326:06Third Quarter28Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9459085)

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

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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 70% 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 Waxing Gibbous (70% 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