Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Thursday, July 16, 2026
The tide is currently rising in Petersburg, AK.
Next low tide : 9:42 pm (1.1 ft)
Next high tide : in 5h 00m at 3:49 pm (16.5 ft)
Sunset today : 9:32 pm
Sunrise tomorrow : 4:23 am
Moon phase : Waxing Crescent (8% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Jun 1970

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:2013.511:0917.05:09-1.15:022.93:078:31Waning Crescent1Mon
2Tue12:1114.05:55-1.95:493.13:068:33New Moon2Tue
3Wed12:5614.26:38-2.36:323.33:058:34New Moon3Wed
4Thu12:3217.11:3914.37:18-2.37:143.63:048:35New Moon4Thu
5Fri1:1216.82:1914.17:58-2.17:543.83:038:36New Moon5Fri
6Sat1:5116.32:5813.88:37-1.68:334.03:028:38Waxing Crescent6Sat
7Sun2:2915.73:3813.59:16-1.09:144.33:018:39Waxing Crescent7Sun
8Mon3:0814.94:1813.19:56-0.39:584.63:018:40Waxing Crescent8Mon
9Tue3:5013.95:0012.810:360.510:484.83:008:41Waxing Crescent9Tue
10Wed4:3612.95:4412.611:181.411:464.93:008:42First Quarter10Wed
11Thu5:2911.86:3212.712:042.22:598:43First Quarter11Thu
12Fri6:3311.07:2113.012:524.612:542.92:598:44First Quarter12Fri
13Sat7:4610.78:1013.51:593.91:483.52:588:44First Quarter13Sat
14Sun8:5810.88:5814.33:012.92:444.02:588:45Waxing Gibbous14Sun
15Mon10:0311.49:4515.13:561.73:394.22:588:46Waxing Gibbous15Mon
16Tue11:0012.210:3216.04:450.44:324.12:578:46Waxing Gibbous16Tue
17Wed11:5113.111:1816.95:31-0.95:213.92:578:47Full Moon17Wed
18Thu12:3813.96:15-2.06:093.52:578:47Full Moon18Thu
19Fri12:0617.61:2414.57:00-2.86:563.12:578:48Full Moon19Fri
20Sat12:5318.12:0915.07:44-3.47:442.72:588:48Full Moon20Sat
21Sun1:4118.32:5515.38:29-3.58:332.52:588:48Waning Gibbous21Sun
22Mon2:3017.93:4015.49:15-3.29:262.32:588:48Waning Gibbous22Mon
23Tue3:2117.14:2815.410:01-2.510:222.32:588:49Waning Gibbous23Tue
24Wed4:1515.85:1715.410:49-1.411:252.22:598:49Third Quarter24Wed
25Thu5:1414.36:0915.311:400.02:598:49Third Quarter25Thu
26Fri6:2112.97:0515.312:332.112:341.43:008:48Third Quarter26Fri
27Sat7:3811.98:0215.41:441.71:352.83:008:48Third Quarter27Sat
28Sun8:5811.69:0015.52:551.02:393.83:018:48Waning Crescent28Sun
29Mon10:1211.89:5615.73:580.33:444.43:028:48Waning Crescent29Mon
30Tue11:1412.410:4815.94:54-0.54:444.53:028:47Waning Crescent30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9451439)

Common Questions About Petersburg, AK Tides

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

Slack tide in Petersburg, AK is approximately 6:45 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 Petersburg, AK?

Petersburg, AK is currently in a spring phase. Tonight's moon is 8% 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 is the moon phase in Petersburg, AK tonight?

Tonight the moon over Petersburg, AK is Waxing Crescent (8% illuminated). This places Petersburg, 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