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

TIDE TIMES for Saturday, July 4, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 12:08 pm (-0.7 ft)
Next high tide : in 5h 00m at 5:11 am (7.2 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 - Aug 2052

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:115.77:436.81:272.11:221.96:4310:41First Quarter1Thu
2Fri8:085.18:316.62:252.52:062.96:4510:39First Quarter2Fri
3Sat9:254.69:296.53:392.72:593.76:4710:37First Quarter3Sat
4Sun11:014.510:336.65:032.54:074.26:4910:35Waxing Gibbous4Sun
5Mon12:214.86:122.05:204.36:5110:33Waxing Gibbous5Mon
6Tue1:155.27:031.36:234.16:5310:31Waxing Gibbous6Tue
7Wed12:267.31:555.67:450.67:153.66:5510:29Waxing Gibbous7Wed
8Thu1:127.62:296.08:200.07:593.16:5710:26Full Moon8Thu
9Fri1:547.93:016.48:53-0.58:402.56:5910:24Full Moon9Fri
10Sat2:348.23:326.89:24-0.99:191.97:0010:22Full Moon10Sat
11Sun3:128.34:037.29:56-1.29:581.47:0210:20Full Moon11Sun
12Mon3:508.24:357.410:28-1.110:381.07:0410:17Waning Gibbous12Mon
13Tue4:307.95:097.711:02-0.811:220.87:0610:15Waning Gibbous13Tue
14Wed5:137.55:477.811:39-0.27:0810:13Waning Gibbous14Wed
15Thu6:006.96:287.812:090.712:180.67:1010:10Waning Gibbous15Thu
16Fri6:536.27:167.71:020.91:021.57:1210:08Third Quarter16Fri
17Sat7:585.68:137.62:041.11:552.57:1410:06Third Quarter17Sat
18Sun9:235.19:227.63:181.33:013.37:1610:03Third Quarter18Sun
19Mon11:005.210:387.74:441.04:213.77:1810:01Waning Crescent19Mon
20Tue12:195.66:010.45:423.57:209:58Waning Crescent20Tue
21Wed1:176.27:03-0.36:512.97:229:56Waning Crescent21Wed
22Thu12:518.32:046.87:53-0.97:492.17:249:53New Moon22Thu
23Fri1:458.52:457.28:37-1.28:381.47:269:51New Moon23Fri
24Sat2:338.63:227.69:16-1.39:220.87:289:48New Moon24Sat
25Sun3:178.53:577.89:52-1.110:030.57:309:46New Moon25Sun
26Mon3:588.24:307.810:25-0.710:430.57:319:43Waxing Crescent26Mon
27Tue4:377.75:027.710:580.011:210.77:339:41Waxing Crescent27Tue
28Wed5:167.25:357.611:300.87:359:38Waxing Crescent28Wed
29Thu5:566.56:087.312:011.012:031.77:379:36Waxing Crescent29Thu
30Fri6:395.96:467.012:441.612:382.77:399:33First Quarter30Fri
31Sat7:295.37:306.71:322.11:193.67:419:31First Quarter31Sat
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 8:39 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 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