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

TIDE TIMES for Monday, August 3, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 12:04 pm (0.3 ft)
Next high tide : in 9m at 5:38 am (6.7 ft)
Sunset today : 10:39 pm
Sunrise tomorrow : 6:46 am
Moon phase : Waning Gibbous (74% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Jan 1966

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:556.98:454.81:213.23:032.99:064:13First Quarter1Sat
2Sun8:457.410:095.02:193.84:061.89:064:14Waxing Gibbous2Sun
3Mon9:357.911:175.53:204.25:000.69:054:16Waxing Gibbous3Mon
4Tue10:258.64:194.45:49-0.69:054:17Waxing Gibbous4Tue
5Wed12:116.011:14 AM9.15:144.36:35-1.69:044:19Full Moon5Wed
6Thu12:586.412:039.66:074.07:20-2.39:044:20Full Moon6Thu
7Fri1:416.812:529.96:583.68:03-2.89:034:21Full Moon7Fri
8Sat2:247.01:409.97:473.18:47-2.99:034:23Waning Gibbous8Sat
9Sun3:077.22:299.58:372.89:30-2.59:024:25Waning Gibbous9Sun
10Mon3:507.33:198.89:292.610:13-1.89:014:26Waning Gibbous10Mon
11Tue4:357.44:127.910:262.510:57-0.89:004:28Waning Gibbous11Tue
12Wed5:217.55:106.811:292.511:420.48:594:30Third Quarter12Wed
13Thu6:097.56:185.812:412.48:584:31Third Quarter13Thu
14Fri7:027.57:455.112:301.82:042.18:574:33Third Quarter14Fri
15Sat8:007.69:254.91:263.03:271.58:564:35Waning Crescent15Sat
16Sun8:597.710:515.22:314.04:350.98:554:37Waning Crescent16Sun
17Mon9:557.911:545.63:414.55:300.38:544:39Waning Crescent17Mon
18Tue10:478.14:454.86:17-0.28:524:41Waning Crescent18Tue
19Wed12:415.911:33 AM8.35:404.76:56-0.58:514:43New Moon19Wed
20Thu1:186.212:158.46:254.47:31-0.88:504:44New Moon20Thu
21Fri1:516.412:528.57:044.18:02-0.98:484:46New Moon21Fri
22Sat2:206.51:288.47:403.88:32-0.98:474:48New Moon22Sat
23Sun2:486.62:028.28:153.59:00-0.78:454:50Waxing Crescent23Sun
24Mon3:166.62:357.98:503.39:28-0.48:444:53Waxing Crescent24Mon
25Tue3:436.63:107.49:273.19:560.18:424:55Waxing Crescent25Tue
26Wed4:116.73:466.810:073.010:250.78:414:57Waxing Crescent26Wed
27Thu4:416.74:276.110:513.010:561.68:394:59First Quarter27Thu
28Fri5:156.85:165.411:433.011:312.58:375:01First Quarter28Fri
29Sat5:556.96:214.812:462.98:355:03First Quarter29Sat
30Sun6:447.17:574.512:143.52:032.58:345:05First Quarter30Sun
31Mon7:457.49:494.61:134.43:251.78:325:07Waxing Gibbous31Mon
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 8:51 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 74% 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 (74% 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