Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Monday, October 26, 2026
The tide is currently falling in Petersburg, AK.

Next low tide : in 5h 04m at 7:35 am (1.4 ft)
Next high tide : 1:38 pm (19.0 ft)
Sunset today : 5:22 pm
Sunrise tomorrow : 7:49 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Oct 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	Thu	4:54	14.2	4:39	16.9	10:33	3.6	11:35	0.0	6:56	6:26		1	Thu
2	Fri	5:54	13.0	5:35	15.6	11:25	4.9			6:58	6:23		2	Fri
3	Sat	7:12	12.1	6:51	14.4	12:44	1.0	12:38	6.0	7:00	6:21		3	Sat
4	Sun	8:46	12.1	8:28	13.9	2:08	1.6	2:22	6.2	7:02	6:18		4	Sun
5	Mon	10:07	13.0	9:57	14.3	3:32	1.5	4:00	5.2	7:04	6:15		5	Mon
6	Tue	11:04	14.4	11:05	15.2	4:40	0.8	5:09	3.5	7:06	6:13		6	Tue
7	Wed	11:49	15.7	11:59	16.0	5:33	0.2	6:01	1.8	7:08	6:10		7	Wed
8	Thu			12:27	16.8	6:16	-0.1	6:44	0.3	7:10	6:07		8	Thu
9	Fri	12:46	16.5	1:02	17.7	6:55	-0.1	7:24	-0.8	7:12	6:05		9	Fri
10	Sat	1:29	16.7	1:34	18.1	7:31	0.2	8:00	-1.5	7:14	6:02		10	Sat
11	Sun	2:09	16.5	2:05	18.1	8:04	0.8	8:35	-1.6	7:17	5:59		11	Sun
12	Mon	2:46	16.1	2:35	17.8	8:37	1.7	9:10	-1.3	7:19	5:57		12	Mon
13	Tue	3:23	15.4	3:05	17.2	9:09	2.7	9:44	-0.7	7:21	5:54		13	Tue
14	Wed	4:01	14.5	3:36	16.4	9:41	3.8	10:20	0.3	7:23	5:52		14	Wed
15	Thu	4:40	13.4	4:09	15.4	10:15	4.8	11:01	1.4	7:25	5:49		15	Thu
16	Fri	5:26	12.3	4:48	14.2	10:54	5.9	11:50	2.6	7:27	5:46		16	Fri
17	Sat	6:25	11.4	5:40	13.1	11:46	6.8			7:29	5:44		17	Sat
18	Sun	7:46	11.0	6:55	12.1	12:56	3.4	1:09	7.3	7:32	5:41		18	Sun
19	Mon	9:11	11.3	8:28	11.9	2:18	3.7	2:54	7.0	7:34	5:39		19	Mon
20	Tue	10:11	12.3	9:47	12.5	3:33	3.4	4:10	5.8	7:36	5:36		20	Tue
21	Wed	10:53	13.5	10:46	13.4	4:28	2.8	5:02	4.2	7:38	5:34		21	Wed
22	Thu	11:27	14.8	11:34	14.4	5:11	2.2	5:43	2.5	7:40	5:31		22	Thu
23	Fri	11:59	16.1			5:48	1.6	6:21	0.8	7:42	5:29		23	Fri
24	Sat	12:19	15.3	12:30	17.3	6:24	1.3	6:58	-0.7	7:45	5:26		24	Sat
25	Sun	1:01	16.0	1:03	18.3	6:59	1.2	7:36	-2.0	7:47	5:24		25	Sun
26	Mon	1:43	16.5	1:38	19.0	7:35	1.4	8:15	-2.7	7:49	5:22		26	Mon
27	Tue	2:26	16.6	2:15	19.3	8:13	1.8	8:57	-3.0	7:51	5:19		27	Tue
28	Wed	3:11	16.3	2:55	19.1	8:53	2.4	9:41	-2.6	7:53	5:17		28	Wed
29	Thu	3:59	15.6	3:39	18.4	9:36	3.3	10:30	-1.8	7:55	5:15		29	Thu
30	Fri	4:51	14.7	4:29	17.2	10:26	4.2	11:26	-0.7	7:58	5:12		30	Fri
31	Sat	5:53	13.8	5:29	15.7	11:26	5.2			8:00	5:10		31	Sat
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (9451439)

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When is the lowest tide this week in Petersburg, AK?

The lowest tide this week in Petersburg, AK is -3.0 ft on Tuesday, Oct 27 at 8:57 pm.

When is the highest tide this week in Petersburg, AK?

The highest tide this week in Petersburg, AK is 19.3 ft on Tuesday, Oct 27 at 2:15 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 Petersburg, AK?

Petersburg, AK is currently in a spring phase. Tonight's moon is 99% 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 Petersburg, 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 Petersburg, AK?

Tide predictions for Petersburg, 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 Petersburg, AK?

Tide data for Petersburg, AK is sourced from NOAA Station #9451439. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9451439.

What time is high tide in Petersburg, AK today?

High tides in Petersburg, AK today: 1:43 am (16.5 ft), 1:38 pm (19.0 ft). The 1:38 pm high of 19.0 ft is notably higher than the other — known as diurnal inequality, common on coasts influenced by lunar declination.

What time is low tide in Petersburg, AK today?

Low tides in Petersburg, AK today: 7:35 am (1.4 ft), 8:15 pm (-2.7 ft). The 8:15 pm low of -2.7 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 Petersburg, AK today?

Today's tidal range in Petersburg, AK is 21.7 ft — the difference between the day's highest and lowest water level. This month's average daily range is about 15.3 ft, so today's swing is above-average.

What is the moon phase in Petersburg, AK tonight?

Tonight the moon over Petersburg, AK is Full Moon (99% illuminated). This places Petersburg, AK in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

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

Petersburg, 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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