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 4h 17m at 11:11 pm (1.8 ft)
Next high tide (tomorrow) : 4:57 am (7.3 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 - Dec 1968

< Nov 1968

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Jan 1969 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Sun	10:41	7.9	11:54	5.9	4:36	3.2	5:48	0.4	8:43	4:08		1	Sun
2	Mon	11:14	8.2			5:16	3.6	6:24	-0.2	8:44	4:07		2	Mon
3	Tue	12:37	6.1	11:46 AM	8.4	5:53	3.9	6:58	-0.5	8:46	4:06		3	Tue
4	Wed	1:16	6.3	12:18	8.6	6:28	4.2	7:30	-0.6	8:47	4:05		4	Wed
5	Thu	1:51	6.3	12:51	8.6	7:02	4.4	8:03	-0.6	8:49	4:05		5	Thu
6	Fri	2:26	6.3	1:24	8.6	7:37	4.6	8:36	-0.5	8:50	4:04		6	Fri
7	Sat	3:01	6.2	1:58	8.4	8:11	4.7	9:10	-0.3	8:52	4:04		7	Sat
8	Sun	3:38	6.1	2:34	8.1	8:48	4.8	9:47	-0.1	8:53	4:03		8	Sun
9	Mon	4:17	5.9	3:12	7.7	9:28	4.9	10:25	0.3	8:54	4:03		9	Mon
10	Tue	4:58	5.9	3:55	7.1	10:16	5.0	11:06	0.7	8:55	4:03		10	Tue
11	Wed	5:42	5.9	4:47	6.5	11:13	4.9	11:51	1.1	8:57	4:02		11	Wed
12	Thu	6:29	6.1	5:50	5.9			12:23	4.6	8:58	4:02		12	Thu
13	Fri	7:18	6.5	7:10	5.4	12:40	1.7	1:43	3.8	8:59	4:02		13	Fri
14	Sat	8:07	7.1	8:39	5.3	1:34	2.3	2:59	2.6	9:00	4:02		14	Sat
15	Sun	8:55	7.8	9:59	5.5	2:32	2.9	4:03	1.2	9:01	4:02		15	Sun
16	Mon	9:43	8.5	11:09	5.9	3:29	3.3	4:59	-0.2	9:02	4:02		16	Mon
17	Tue	10:32	9.2			4:25	3.6	5:51	-1.4	9:02	4:03		17	Tue
18	Wed	12:08	6.3	11:22 AM	9.7	5:20	3.7	6:41	-2.3	9:03	4:03		18	Wed
19	Thu	1:01	6.7	12:11	10.1	6:13	3.7	7:29	-2.8	9:04	4:03		19	Thu
20	Fri	1:50	6.9	1:01	10.2	7:05	3.5	8:16	-2.9	9:04	4:04		20	Fri
21	Sat	2:38	7.0	1:51	10.0	7:56	3.4	9:02	-2.7	9:05	4:04		21	Sat
22	Sun	3:25	7.1	2:41	9.4	8:47	3.4	9:48	-2.1	9:05	4:05		22	Sun
23	Mon	4:13	7.0	3:32	8.6	9:42	3.4	10:34	-1.2	9:06	4:05		23	Mon
24	Tue	5:01	7.0	4:25	7.6	10:41	3.5	11:20	-0.2	9:06	4:06		24	Tue
25	Wed	5:49	6.9	5:24	6.6	11:48	3.5			9:06	4:07		25	Wed
26	Thu	6:40	6.9	6:33	5.6	12:06	1.0	1:05	3.4	9:06	4:07		26	Thu
27	Fri	7:32	7.0	8:01	5.0	12:55	2.1	2:31	2.9	9:06	4:08		27	Fri
28	Sat	8:23	7.2	9:36	4.9	1:49	3.2	3:44	2.2	9:07	4:09		28	Sat
29	Sun	9:11	7.4	10:54	5.1	2:48	4.0	4:42	1.4	9:06	4:10		29	Sun
30	Mon	9:57	7.6	11:53	5.4	3:46	4.6	5:30	0.8	9:06	4:11		30	Mon
31	Tue	10:40	7.9			4:40	4.9	6:11	0.3	9:06	4:12		31	Tue
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (9459085)

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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 2:04 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 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

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