Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Monday, September 21, 2026
The tide is currently falling in Port Graham, AK.

Next low tide : in 2h 17m at 5:52 am (4.4 ft)
Next high tide : 12:37 pm (12.6 ft)
Sunset today : 8:09 pm
Sunrise tomorrow : 7:50 am
Moon phase : Waxing Gibbous (77% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Sep 2026

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Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Tue	5:32	16.8	5:36	18.6	11:20	1.2	11:55	-0.3	7:05	9:09		1	Tue
2	Wed	6:17	15.4	6:13	17.8	11:58	3.0			7:07	9:06		2	Wed
3	Thu	7:12	13.7	6:59	16.6	12:44	0.7	12:43	5.0	7:09	9:03		3	Thu
4	Fri	8:29	12.3	8:03	15.4	1:46	1.9	1:46	6.8	7:12	9:00		4	Fri
5	Sat	10:14	11.9	9:34	14.7	3:09	2.6	3:17	7.9	7:14	8:57		5	Sat
6	Sun	11:49	12.9	11:13	15.2	4:47	2.3	5:00	7.3	7:16	8:54		6	Sun
7	Mon			12:52	14.6	6:05	0.9	6:18	5.4	7:18	8:51		7	Mon
8	Tue	12:28	16.5	1:38	16.4	7:01	-0.7	7:14	3.1	7:21	8:48		8	Tue
9	Wed	1:26	18.0	2:17	17.9	7:45	-1.9	8:00	1.0	7:23	8:45		9	Wed
10	Thu	2:15	19.1	2:52	19.1	8:24	-2.6	8:41	-0.8	7:25	8:42		10	Thu
11	Fri	2:59	19.7	3:25	19.8	9:00	-2.6	9:20	-1.9	7:28	8:39		11	Fri
12	Sat	3:40	19.6	3:57	20.1	9:35	-2.1	9:57	-2.3	7:30	8:36		12	Sat
13	Sun	4:19	19.1	4:27	19.7	10:08	-0.9	10:34	-1.9	7:32	8:33		13	Sun
14	Mon	4:57	18.0	4:56	18.9	10:42	0.6	11:10	-1.0	7:34	8:30		14	Mon
15	Tue	5:35	16.5	5:25	17.8	11:15	2.5	11:47	0.5	7:37	8:27		15	Tue
16	Wed	6:15	14.8	5:56	16.3	11:49	4.5			7:39	8:24		16	Wed
17	Thu	7:03	13.0	6:30	14.8	12:28	2.2	12:27	6.5	7:41	8:21		17	Thu
18	Fri	8:08	11.5	7:18	13.2	1:18	3.9	1:17	8.2	7:43	8:18		18	Fri
19	Sat	9:55	10.8	8:39	12.1	2:32	5.2	2:40	9.4	7:46	8:15		19	Sat
20	Sun	11:44	11.4	10:34	12.0	4:27	5.4	4:42	9.1	7:48	8:12		20	Sun
21	Mon			12:37	12.6	5:52	4.4	6:02	7.7	7:50	8:09		21	Mon
22	Tue			1:10	14.0	6:37	3.1	6:45	5.8	7:52	8:06		22	Tue
23	Wed	12:45	14.6	1:38	15.4	7:09	1.7	7:20	3.8	7:55	8:03		23	Wed
24	Thu	1:26	16.0	2:04	16.8	7:38	0.6	7:53	1.8	7:57	8:00		24	Thu
25	Fri	2:03	17.3	2:30	18.1	8:08	-0.2	8:26	0.0	7:59	7:57		25	Fri
26	Sat	2:40	18.2	2:58	19.2	8:38	-0.7	8:59	-1.5	8:02	7:54		26	Sat
27	Sun	3:18	18.8	3:26	20.0	9:10	-0.6	9:34	-2.5	8:04	7:51		27	Sun
28	Mon	3:56	18.9	3:57	20.3	9:44	0.0	10:11	-2.9	8:06	7:48		28	Mon
29	Tue	4:36	18.4	4:29	20.2	10:19	1.0	10:51	-2.5	8:08	7:45		29	Tue
30	Wed	5:19	17.3	5:06	19.4	10:57	2.5	11:35	-1.5	8:11	7:43		30	Wed
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (9455437)

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When is the lowest tide this week in Port Graham, AK?

The lowest tide this week in Port Graham, AK is -2.5 ft on Sunday, Sep 27 at 9:34 pm.

When is the highest tide this week in Port Graham, AK?

The highest tide this week in Port Graham, AK is 20.0 ft on Sunday, Sep 27 at 3:26 pm — worth noting for launching your boat and being alert for possible high tide flooding.

Is this week a spring tide or neap tide in Port Graham, AK?

Port Graham, AK is currently in a transitional phase. Tonight's moon is 77% 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 Port Graham, 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 Port Graham, AK?

Tide predictions for Port Graham, 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 Port Graham, AK?

Tide data for Port Graham, AK is sourced from NOAA Station #9455437. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9455437.

What time is high tide in Port Graham, AK today?

High tides in Port Graham, AK today: 12:37 pm (12.6 ft), 11:54 pm (13.1 ft).

What time is low tide in Port Graham, AK today?

Low tides in Port Graham, AK today: 5:52 am (4.4 ft), 6:02 pm (7.7 ft).

What is the tidal range in Port Graham, AK today?

Today's tidal range in Port Graham, AK is 8.7 ft — the difference between the day's highest and lowest water level. This month's average daily range is about 16.3 ft, so today's swing is below-average.

What is the moon phase in Port Graham, AK tonight?

Tonight the moon over Port Graham, AK is Waxing Gibbous (77% illuminated). This places Port Graham, AK in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

What type of tides does Port Graham, AK have — semi-diurnal, diurnal, or mixed?

Port Graham, AK has semi-diurnal tides — two high tides and two low tides roughly every 24 hours and 50 minutes, with similar heights.

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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