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

TIDE TIMES for Saturday, July 4, 2026
The tide is currently rising in Chiachi Island (East Side), AK.
Next low tide (tomorrow) : 12:14 am (3.0 ft)
Next high tide : in 5h 40m at 6:29 pm (6.2 ft)
Sunset today : 11:22 pm
Sunrise tomorrow : 5:59 am
Moon phase : Waning Gibbous (79% illuminated)
Tide Station Location : Station #9459085
Common Questions About Tides

Chiachi Island (East Side), AK Tides - May 2003

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu2:497.83:376.49:33-0.79:222.06:5210:14New Moon1Thu
2Fri3:147.94:116.310:03-0.99:502.56:5010:16New Moon2Fri
3Sat3:418.04:466.110:35-0.910:193.06:4710:18Waxing Crescent3Sat
4Sun4:098.05:235.811:09-0.710:503.56:4510:20Waxing Crescent4Sun
5Mon4:407.86:045.511:47-0.411:234.06:4310:22Waxing Crescent5Mon
6Tue5:157.56:525.112:290.06:4110:24Waxing Crescent6Tue
7Wed5:577.27:514.912:024.51:190.46:3910:26First Quarter7Wed
8Thu6:496.79:044.912:554.82:180.86:3710:28First Quarter8Thu
9Fri7:576.310:165.22:085.03:250.96:3510:30First Quarter9Fri
10Sat9:216.011:105.83:414.64:320.86:3310:32First Quarter10Sat
11Sun10:456.011:546.55:073.45:300.66:3110:34Waxing Gibbous11Sun
12Mon11:596.26:131.96:210.56:2910:36Waxing Gibbous12Mon
13Tue12:347.41:026.57:090.27:080.66:2710:38Waxing Gibbous13Tue
14Wed1:148.22:006.87:59-1.37:530.86:2510:39Full Moon14Wed
15Thu1:548.92:536.98:47-2.58:371.26:2310:41Full Moon15Thu
16Fri2:359.43:456.99:33-3.29:211.66:2110:43Full Moon16Fri
17Sat3:179.64:366.810:20-3.410:052.26:2010:45Waning Gibbous17Sat
18Sun4:019.55:286.511:08-3.010:512.86:1810:47Waning Gibbous18Sun
19Mon4:469.06:236.211:57-2.311:413.46:1610:48Waning Gibbous19Mon
20Tue5:368.47:225.912:50-1.46:1510:50Waning Gibbous20Tue
21Wed6:297.58:275.712:374.01:47-0.46:1310:52Third Quarter21Wed
22Thu7:316.79:375.71:454.32:510.46:1110:54Third Quarter22Thu
23Fri8:455.910:395.93:144.33:571.06:1010:55Third Quarter23Fri
24Sat10:095.411:286.24:483.74:581.46:0810:57Third Quarter24Sat
25Sun11:275.35:572.85:481.76:0710:59Waning Crescent25Sun
26Mon12:076.512:315.36:491.86:302.06:0611:00Waning Crescent26Mon
27Tue12:406.91:235.47:310.97:072.36:0411:02Waning Crescent27Tue
28Wed1:107.32:095.68:080.17:412.66:0311:03Waning Crescent28Wed
29Thu1:397.62:495.88:42-0.58:152.96:0211:05New Moon29Thu
30Fri2:097.93:265.99:14-0.98:493.26:0111:06New Moon30Fri
31Sat2:408.14:035.99:46-1.19:223.46:0011:08New Moon31Sat
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 9:21 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 transitional phase. Tonight's moon is 79% 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 (79% 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