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

TIDE TIMES for Thursday, July 16, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide : 10:54 am (-2.8 ft)
Next high tide : in 2h 23m at 3:56 am (9.2 ft)
Sunset today : 11:10 pm
Sunrise tomorrow : 6:14 am
Moon phase : Waxing Crescent (8% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - Dec 1988

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:256.07:445.41:362.02:314.89:435:08Third Quarter1Thu
2Fri9:136.29:105.12:282.63:564.09:455:07Third Quarter2Fri
3Sat9:556.610:305.13:223.14:563.09:465:06Waning Crescent3Sat
4Sun10:337.111:355.34:123.55:432.09:485:05Waning Crescent4Sun
5Mon11:087.64:583.86:241.09:495:05Waning Crescent5Mon
6Tue12:295.611:45 AM8.15:424.17:020.29:505:04Waning Crescent6Tue
7Wed1:155.912:228.56:244.37:38-0.59:525:04New Moon7Wed
8Thu1:566.21:008.97:064.38:15-1.09:535:03New Moon8Thu
9Fri2:366.41:389.17:464.38:53-1.49:545:03New Moon9Fri
10Sat3:166.52:199.28:274.39:33-1.69:565:03New Moon10Sat
11Sun3:576.53:019.19:104.210:14-1.69:575:02Waxing Crescent11Sun
12Mon4:396.53:468.89:564.110:57-1.39:585:02Waxing Crescent12Mon
13Tue5:246.54:358.210:494.011:42-0.89:595:02Waxing Crescent13Tue
14Wed6:116.65:317.411:493.910:005:02First Quarter14Wed
15Thu7:006.86:366.512:290.012:593.610:015:02First Quarter15Thu
16Fri7:537.17:555.81:190.92:203.010:025:02First Quarter16Fri
17Sat8:477.69:285.42:141.83:452.010:025:03First Quarter17Sat
18Sun9:428.010:565.43:142.74:570.910:035:03Waxing Gibbous18Sun
19Mon10:348.54:163.45:57-0.210:045:03Waxing Gibbous19Mon
20Tue12:115.711:25 AM8.95:163.96:50-1.010:045:04Waxing Gibbous20Tue
21Wed1:106.112:139.26:134.27:37-1.510:055:04Full Moon21Wed
22Thu2:006.41:009.37:054.28:20-1.810:055:05Full Moon22Thu
23Fri2:446.61:459.37:534.29:00-1.710:065:05Full Moon23Fri
24Sat3:246.72:269.18:374.19:38-1.510:065:06Full Moon24Sat
25Sun4:026.73:068.89:194.010:14-1.110:065:07Waning Gibbous25Sun
26Mon4:396.63:458.210:004.010:49-0.610:065:07Waning Gibbous26Mon
27Tue5:146.54:257.610:434.011:220.110:065:08Waning Gibbous27Tue
28Wed5:496.45:056.811:294.011:560.810:065:09Waning Gibbous28Wed
29Thu6:236.45:506.012:204.010:065:10Third Quarter29Thu
30Fri7:016.46:445.312:301.71:203.910:065:11Third Quarter30Fri
31Sat7:426.67:584.71:072.62:333.710:065:13Third Quarter31Sat
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 7:25 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 8% 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 Waxing Crescent (8% 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