Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Monday, August 10, 2026
The tide is currently falling in Port Graham, AK.

Next low tide : in 24m at 7:17 pm (4.2 ft)
Next high tide (tomorrow) : 1:28 am (18.3 ft)
Sunset today : 10:10 pm
Sunrise tomorrow : 6:14 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Aug 2026

< Jul 2026

Print this Tide Chart

Sep 2026 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Sat	4:33	17.5	5:16	17.3	10:44	-1.9	11:03	1.4	5:53	10:33		1	Sat
2	Sun	5:10	16.9	5:45	17.3	11:16	-1.0	11:41	1.3	5:56	10:31		2	Sun
3	Mon	5:49	16.0	6:16	17.2	11:49	0.3			5:58	10:28		3	Mon
4	Tue	6:34	14.7	6:51	16.8	12:23	1.4	12:26	2.0	6:00	10:26		4	Tue
5	Wed	7:28	13.3	7:34	16.3	1:12	1.8	1:09	3.8	6:02	10:23		5	Wed
6	Thu	8:39	12.0	8:31	15.8	2:12	2.2	2:06	5.6	6:05	10:21		6	Thu
7	Fri	10:13	11.5	9:45	15.5	3:28	2.3	3:23	6.9	6:07	10:18		7	Fri
8	Sat	11:50	12.3	11:09	15.9	4:55	1.7	4:55	7.1	6:09	10:16		8	Sat
9	Sun			1:01	13.8	6:12	0.3	6:15	6.0	6:12	10:13		9	Sun
10	Mon	12:25	17.0	1:55	15.5	7:12	-1.5	7:17	4.2	6:14	10:10		10	Mon
11	Tue	1:28	18.3	2:40	17.1	8:02	-3.0	8:10	2.3	6:16	10:08		11	Tue
12	Wed	2:22	19.5	3:21	18.4	8:45	-4.0	8:56	0.6	6:19	10:05		12	Wed
13	Thu	3:11	20.1	3:58	19.2	9:25	-4.4	9:40	-0.6	6:21	10:02		13	Thu
14	Fri	3:56	20.1	4:34	19.6	10:04	-4.0	10:22	-1.1	6:23	10:00		14	Fri
15	Sat	4:38	19.4	5:08	19.4	10:40	-2.9	11:03	-1.0	6:26	9:57		15	Sat
16	Sun	5:20	18.1	5:41	18.7	11:16	-1.2	11:45	-0.3	6:28	9:54		16	Sun
17	Mon	6:02	16.5	6:14	17.6	11:52	0.9			6:30	9:51		17	Mon
18	Tue	6:47	14.6	6:47	16.3	12:27	0.9	12:29	3.2	6:33	9:49		18	Tue
19	Wed	7:39	12.7	7:25	14.8	1:14	2.3	1:09	5.4	6:35	9:46		19	Wed
20	Thu	8:48	11.1	8:14	13.5	2:10	3.8	2:00	7.4	6:37	9:43		20	Thu
21	Fri	10:33	10.5	9:29	12.6	3:29	4.7	3:17	8.7	6:39	9:40		21	Fri
22	Sat			12:17	11.2	5:16	4.6	5:03	8.8	6:42	9:37		22	Sat
23	Sun			1:14	12.3	6:29	3.6	6:22	7.8	6:44	9:35		23	Sun
24	Mon	12:18	13.6	1:50	13.6	7:13	2.2	7:09	6.3	6:46	9:32		24	Mon
25	Tue	1:09	14.9	2:20	14.8	7:46	0.9	7:46	4.7	6:49	9:29		25	Tue
26	Wed	1:50	16.1	2:47	16.0	8:16	-0.3	8:20	3.1	6:51	9:26		26	Wed
27	Thu	2:27	17.2	3:14	17.1	8:44	-1.3	8:54	1.6	6:53	9:23		27	Thu
28	Fri	3:03	18.0	3:41	18.0	9:13	-1.8	9:27	0.4	6:56	9:20		28	Fri
29	Sat	3:38	18.4	4:07	18.6	9:43	-1.9	10:01	-0.5	6:58	9:17		29	Sat
30	Sun	4:14	18.4	4:35	19.0	10:13	-1.4	10:36	-0.9	7:00	9:14		30	Sun
31	Mon	4:52	17.9	5:04	19.0	10:45	-0.3	11:13	-0.9	7:02	9:11		31	Mon
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)

www.USHarbors.com

The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

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

The lowest tide this week in Port Graham, AK is -4.4 ft on Thursday, Aug 13 at 9:25 am.

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

The highest tide this week in Port Graham, AK is 20.1 ft on Thursday, Aug 13 at 3:11 am — worth noting for launching your boat and being alert for possible high tide flooding.

What time does the tide turn (slack tide) in Port Graham, AK today?

Slack tide in Port Graham, AK is approximately 10:22 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 Port Graham, AK?

Port Graham, AK is currently in a spring phase. Tonight's moon is 5% 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 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: 12:25 am (17.0 ft), 1:55 pm (15.5 ft). The 12:25 am high of 17.0 ft is notably higher than the other — known as diurnal inequality, common on coasts influenced by lunar declination.

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

Low tides in Port Graham, AK today: 7:12 am (-1.5 ft), 7:17 pm (4.2 ft). The 7:12 am low of -1.5 ft is a minus tide — water below the MLLW reference datum, which can expose tidepools, mudflats, and shellfish beds not normally accessible.

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

Today's tidal range in Port Graham, AK is 18.4 ft — the difference between the day's highest and lowest water level. This month's average daily range is about 16.5 ft, so today's swing is above-average.

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

Tonight the moon over Port Graham, AK is Waning Crescent (5% illuminated). This places Port Graham, AK in a spring tide cycle, so tidal ranges are near their weekly maximum 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

In The Zone: The Sabre 51 Salon Express

By US Harbors When Sabre Yachts completed construction of hull number 200 of its 48 Salon Express model, more than half the crew who built it had also worked on hull number one. The average tenure on that line was 12 years, and they produced a yacht that proved to… Learn More