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

TIDE TIMES for Sunday, August 2, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 11:33 am (-0.5 ft)
Next high tide : in 5h 06m at 4:57 am (7.3 ft)
Sunset today : 10:43 pm
Sunrise tomorrow : 6:42 am
Moon phase : Waning Gibbous (90% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Aug 1968

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:445.46:057.612:001.411:44 AM2.14:428:43First Quarter1Thu
2Fri7:044.87:037.71:121.312:363.24:448:41First Quarter2Fri
3Sat8:474.68:117.92:350.91:454.14:468:38Waxing Gibbous3Sat
4Sun10:254.99:238.23:570.23:054.54:478:36Waxing Gibbous4Sun
5Mon11:345.410:318.65:05-0.64:234.34:498:34Waxing Gibbous5Mon
6Tue12:246.06:01-1.35:313.74:518:32Full Moon6Tue
7Wed1:066.46:49-1.96:283.04:538:30Full Moon7Wed
8Thu12:249.01:446.87:31-2.27:182.24:558:28Full Moon8Thu
9Fri1:128.92:197.18:09-2.18:031.74:578:26Full Moon9Fri
10Sat1:568.62:537.38:43-1.78:471.34:598:23Waning Gibbous10Sat
11Sun2:388.03:257.39:16-1.19:301.25:018:21Waning Gibbous11Sun
12Mon3:197.33:577.39:47-0.110:131.35:038:19Waning Gibbous12Mon
13Tue4:016.54:287.210:181.010:581.65:058:17Waning Gibbous13Tue
14Wed4:455.75:027.010:492.111:482.05:078:14Third Quarter14Wed
15Thu5:365.05:406.811:223.35:098:12Third Quarter15Thu
16Fri6:454.46:286.712:502.412:024.35:118:10Third Quarter16Fri
17Sat8:464.27:336.62:152.61:015.15:128:07Third Quarter17Sat
18Sun10:374.58:496.73:462.32:295.55:148:05Waning Crescent18Sun
19Mon11:314.99:557.14:501.73:555.45:168:02Waning Crescent19Mon
20Tue12:055.45:370.94:574.85:188:00Waning Crescent20Tue
21Wed12:335.86:140.25:454.05:207:57Waning Crescent21Wed
22Thu12:596.26:46-0.56:263.25:227:55New Moon22Thu
23Fri12:178.21:256.67:15-1.07:052.35:247:53New Moon23Fri
24Sat12:568.31:517.07:44-1.37:441.55:267:50New Moon24Sat
25Sun1:358.22:197.48:14-1.28:230.85:287:48Waxing Crescent25Sun
26Mon2:158.02:497.88:44-0.89:050.35:307:45Waxing Crescent26Mon
27Tue2:577.53:218.09:16-0.19:500.15:327:43Waxing Crescent27Tue
28Wed3:436.83:578.29:510.910:400.25:347:40Waxing Crescent28Wed
29Thu4:346.14:388.110:282.111:380.65:367:37First Quarter29Thu
30Fri5:375.35:288.011:123.35:387:35First Quarter30Fri
31Sat7:054.86:337.712:501.012:104.45:407:32First 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 8:15 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 spring phase. Tonight's moon is 90% 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 Waning Gibbous (90% 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