Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Monday, August 17, 2026
The tide is currently rising in Petersburg, AK.
Next low tide : 11:32 pm (1.0 ft)
Next high tide : in 1h 25m at 5:02 pm (16.2 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:24 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Oct 1924

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:2317.31:2918.57:25-0.17:56-1.74:554:27Waxing Crescent1Wed
2Thu2:0816.52:0918.18:060.98:43-1.24:574:24Waxing Crescent2Thu
3Fri2:5815.42:5517.28:512.29:36-0.34:594:21First Quarter3Fri
4Sat3:5714.23:5016.09:463.610:410.75:014:19First Quarter4Sat
5Sun5:0913.25:0014.910:564.711:591.45:034:16First Quarter5Sun
6Mon6:3513.06:2514.312:255.15:064:13First Quarter6Mon
7Tue7:5613.67:5014.51:221.51:534.55:084:11Waxing Gibbous7Tue
8Wed8:5914.78:5915.22:331.13:023.25:104:08Waxing Gibbous8Wed
9Thu9:4815.89:5516.03:300.53:561.85:124:05Waxing Gibbous9Thu
10Fri10:3016.810:4216.64:170.04:410.65:144:03Waxing Gibbous10Fri
11Sat11:0817.411:2416.94:57-0.25:22-0.45:164:00Full Moon11Sat
12Sun11:4217.75:340.05:59-1.05:183:57Full Moon12Sun
13Mon12:0316.912:1417.86:080.46:34-1.25:203:55Full Moon13Mon
14Tue12:4016.612:4417.56:401.07:09-1.05:223:52Waning Gibbous14Tue
15Wed1:1616.01:1417.07:121.87:43-0.55:253:50Waning Gibbous15Wed
16Thu1:5215.31:4416.37:442.88:190.25:273:47Waning Gibbous16Thu
17Fri2:2914.42:1715.38:173.88:581.15:293:45Waning Gibbous17Fri
18Sat3:1113.42:5314.38:544.99:422.15:313:42Third Quarter18Sat
19Sun4:0112.43:3913.39:405.810:393.05:333:40Third Quarter19Sun
20Mon5:0511.84:4412.410:456.511:503.55:353:37Third Quarter20Mon
21Tue6:2411.76:1012.012:176.65:373:35Third Quarter21Tue
22Wed7:3612.47:3212.51:063.41:445.95:403:32Third Quarter22Wed
23Thu8:3113.58:3613.52:102.82:454.55:423:30Waning Crescent23Thu
24Fri9:1414.89:2814.63:012.03:322.95:443:27Waning Crescent24Fri
25Sat9:5316.110:1415.83:441.24:131.25:463:25Waning Crescent25Sat
26Sun10:3017.410:5816.74:240.54:53-0.45:483:22New Moon26Sun
27Mon11:0618.511:4217.45:030.15:33-1.75:513:20New Moon27Mon
28Tue11:4419.35:420.06:13-2.65:533:18New Moon28Tue
29Wed12:2617.612:2319.76:220.26:56-3.05:553:15New Moon29Wed
30Thu1:1117.41:0519.57:040.87:40-2.95:573:13Waxing Crescent30Thu
31Fri1:5916.81:4918.87:491.78:29-2.25:593:11Waxing Crescent31Fri
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 8:17 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 transitional phase. Tonight's moon is 28% 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 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 (28% illuminated). This places Petersburg, AK in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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