Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Friday, July 24, 2026
The tide is currently falling in Petersburg, AK.
Next low tide : in 4h 19m at 4:23 pm (6.0 ft)
Next high tide : 10:24 pm (13.7 ft)
Sunset today : 9:19 pm
Sunrise tomorrow : 4:37 am
Moon phase : Waxing Gibbous (80% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Aug 1963

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu9:5211.89:2114.73:341.63:244.92:517:05Waxing Gibbous1Thu
2Fri10:3812.710:0815.64:190.64:144.32:537:03Waxing Gibbous2Fri
3Sat11:1813.710:5216.44:59-0.44:573.52:547:00Full Moon3Sat
4Sun11:5614.511:3317.25:37-1.45:382.72:566:58Full Moon4Sun
5Mon12:3215.36:13-2.16:182.02:586:56Full Moon5Mon
6Tue12:1417.61:0815.96:49-2.56:581.43:006:54Full Moon6Tue
7Wed12:5517.71:4416.37:26-2.57:401.03:026:52Waning Gibbous7Wed
8Thu1:3717.42:2216.48:04-2.18:250.83:046:49Waning Gibbous8Thu
9Fri2:2216.63:0216.48:43-1.39:140.93:066:47Waning Gibbous9Fri
10Sat3:1115.43:4716.19:260.010:101.13:086:45Third Quarter10Sat
11Sun4:0714.04:3815.710:151.411:151.43:116:43Third Quarter11Sun
12Mon5:1512.75:3815.411:132.93:136:40Third Quarter12Mon
13Tue6:3712.06:4815.212:301.412:244.03:156:38Third Quarter13Tue
14Wed8:0412.18:0115.51:480.91:454.53:176:35Waning Crescent14Wed
15Thu9:1912.99:0816.12:590.13:004.23:196:33Waning Crescent15Thu
16Fri10:1813.910:0516.83:58-0.84:023.53:216:31Waning Crescent16Fri
17Sat11:0614.910:5517.34:48-1.64:542.73:236:28New Moon17Sat
18Sun11:4815.611:4017.65:32-2.15:391.93:256:26New Moon18Sun
19Mon12:2616.16:11-2.36:201.43:276:23New Moon19Mon
20Tue12:2117.51:0116.36:48-2.16:591.13:296:21New Moon20Tue
21Wed1:0017.11:3416.27:23-1.67:361.13:316:18Waxing Crescent21Wed
22Thu1:3616.42:0515.97:56-0.78:131.33:336:16Waxing Crescent22Thu
23Fri2:1315.42:3715.48:280.38:511.73:356:13Waxing Crescent23Fri
24Sat2:5014.23:0914.89:011.69:312.33:376:10Waxing Crescent24Sat
25Sun3:3212.93:4514.29:362.910:192.93:396:08First Quarter25Sun
26Mon4:2111.74:2813.510:174.211:183.53:416:05First Quarter26Mon
27Tue5:2710.85:2413.011:115.33:436:03First Quarter27Tue
28Wed6:5510.46:3612.812:343.712:276.03:456:00First Quarter28Wed
29Thu8:2110.97:5013.31:543.21:516.03:475:57Waxing Gibbous29Thu
30Fri9:2311.98:5314.22:592.33:005.33:495:55Waxing Gibbous30Fri
31Sat10:1013.09:4615.43:501.13:524.33:515:52Waxing Gibbous31Sat
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 7:23 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 80% 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 Gibbous (80% 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