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

TIDE TIMES for Saturday, August 1, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 3h 23m at 11:04 am (-1.0 ft)
Next high tide : 5:15 pm (6.9 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 - Nov 1969

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:375.15:136.411:235.97:434:56Third Quarter1Sat
2Sun8:025.26:305.912:502.412:545.97:454:54Third Quarter2Sun
3Mon9:015.68:005.72:032.52:435.27:474:52Third Quarter3Mon
4Tue9:386.09:155.83:032.43:504.17:504:50Waning Crescent4Tue
5Wed10:086.610:156.03:482.34:372.87:524:48Waning Crescent5Wed
6Thu10:377.311:066.34:272.25:161.57:544:46Waning Crescent6Thu
7Fri11:067.911:536.65:032.25:540.37:564:44Waning Crescent7Fri
8Sat11:388.65:392.46:32-0.87:584:42New Moon8Sat
9Sun12:376.812:119.16:162.67:10-1.58:004:40New Moon9Sun
10Mon1:216.912:479.56:542.97:51-2.08:024:38New Moon10Mon
11Tue2:056.91:269.67:333.38:34-2.08:044:36Waxing Crescent11Tue
12Wed2:526.72:089.58:143.79:21-1.78:064:34Waxing Crescent12Wed
13Thu3:446.52:559.19:004.110:12-1.28:084:32Waxing Crescent13Thu
14Fri4:416.23:488.59:534.511:09-0.48:104:31Waxing Crescent14Fri
15Sat5:446.04:517.710:594.88:124:29First Quarter15Sat
16Sun6:546.16:076.912:110.312:234.88:144:27First Quarter16Sun
17Mon8:026.57:376.31:190.92:034.18:174:26First Quarter17Mon
18Tue8:587.09:056.12:261.43:272.98:194:24Waxing Gibbous18Tue
19Wed9:447.610:186.13:241.84:301.58:214:22Waxing Gibbous19Wed
20Thu10:258.111:196.34:142.15:200.38:224:21Waxing Gibbous20Thu
21Fri11:028.54:592.66:04-0.68:244:19Waxing Gibbous21Fri
22Sat12:116.411:38 AM8.85:403.06:44-1.18:264:18Full Moon22Sat
23Sun12:566.612:129.06:193.47:20-1.38:284:17Full Moon23Sun
24Mon1:386.612:469.06:563.87:55-1.28:304:15Full Moon24Mon
25Tue2:176.61:208.87:314.28:30-0.98:324:14Full Moon25Tue
26Wed2:556.41:548.68:074.59:06-0.58:344:13Waning Gibbous26Wed
27Thu3:346.22:308.28:434.79:440.08:364:12Waning Gibbous27Thu
28Fri4:146.03:087.79:225.010:230.68:374:11Waning Gibbous28Fri
29Sat4:575.83:507.110:075.211:051.18:394:10Waning Gibbous29Sat
30Sun5:455.74:396.511:025.311:511.68:414:09Third Quarter30Sun
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 2:09 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 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