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

TIDE TIMES for Friday, July 24, 2026
The tide is currently falling in Chiachi Island (East Side), AK.
Next low tide : in 7h 18m at 6:20 am (1.5 ft)
Next high tide : 12:49 pm (4.5 ft)
Sunset today : 10:59 pm
Sunrise tomorrow : 6:26 am
Moon phase : Waxing Gibbous (72% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Aug 1981

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:259.03:337.19:20-2.19:161.85:429:43New Moon1Sat
2Sun3:088.64:107.19:57-1.79:591.85:439:41Waxing Crescent2Sun
3Mon3:508.14:477.110:33-1.110:431.95:459:39Waxing Crescent3Mon
4Tue4:327.45:226.911:07-0.211:282.15:479:37Waxing Crescent4Tue
5Wed5:146.65:586.811:420.75:499:35First Quarter5Wed
6Thu6:005.96:376.612:162.412:181.85:519:32First Quarter6Thu
7Fri6:535.27:216.51:112.712:592.75:539:30First Quarter7Fri
8Sat8:044.78:156.52:192.81:483.65:559:28First Quarter8Sat
9Sun9:394.59:176.63:422.62:514.25:579:26First Quarter9Sun
10Mon11:084.710:186.84:562.14:034.55:599:24Waxing Gibbous10Mon
11Tue12:095.15:521.45:084.46:019:21Waxing Gibbous11Tue
12Wed12:525.56:370.76:034.06:029:19Waxing Gibbous12Wed
13Thu12:017.71:285.97:150.06:503.56:049:17Full Moon13Thu
14Fri12:458.12:016.47:50-0.77:332.86:069:15Full Moon14Fri
15Sat1:278.42:336.78:23-1.28:132.26:089:12Full Moon15Sat
16Sun2:078.53:057.18:56-1.58:541.66:109:10Full Moon16Sun
17Mon2:478.53:397.39:30-1.59:361.26:129:08Waning Gibbous17Mon
18Tue3:288.24:147.610:06-1.210:210.96:149:05Waning Gibbous18Tue
19Wed4:137.74:517.710:43-0.611:090.86:169:03Waning Gibbous19Wed
20Thu5:017.15:337.811:230.36:189:00Waning Gibbous20Thu
21Fri5:566.36:207.712:030.912:071.46:208:58Third Quarter21Fri
22Sat7:025.67:167.61:061.112:582.56:228:55Third Quarter22Sat
23Sun8:295.28:237.62:221.22:023.46:248:53Third Quarter23Sun
24Mon10:095.29:387.73:491.03:224.06:268:50Waning Crescent24Mon
25Tue11:295.610:498.05:070.44:443.96:288:48Waning Crescent25Tue
26Wed12:286.16:09-0.35:533.46:308:45Waning Crescent26Wed
27Thu1:146.66:59-0.86:502.76:328:43New Moon27Thu
28Fri12:458.51:537.07:42-1.27:382.06:348:40New Moon28Fri
29Sat1:328.62:287.38:20-1.38:211.46:368:38New Moon29Sat
30Sun2:148.53:007.58:55-1.19:001.16:388:35New Moon30Sun
31Mon2:538.23:317.59:27-0.79:380.96:398:33Waxing Crescent31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9459085)

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

Show All
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 9:34 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 72% 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 (72% 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