Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Wednesday, July 29, 2026
The tide is currently rising in Petersburg, AK.
Next low tide : 8:15 am (-1.2 ft)
Next high tide : in 4h 17m at 1:31 am (16.1 ft)
Sunset today : 9:11 pm
Sunrise tomorrow : 4:45 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Mar 1958

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:1014.49:2213.01:595.53:061.35:444:24Waxing Gibbous1Sat
2Sun9:1415.710:1114.63:104.33:57-0.15:414:26Waxing Gibbous2Sun
3Mon10:0917.010:5416.24:062.74:42-1.45:394:28Waxing Gibbous3Mon
4Tue10:5818.211:3517.64:551.05:25-2.35:364:30Full Moon4Tue
5Wed11:4518.95:40-0.56:05-2.85:344:32Full Moon5Wed
6Thu12:1518.712:3119.16:25-1.66:46-2.75:314:34Full Moon6Thu
7Fri12:5419.41:1718.77:10-2.27:27-2.15:284:37Waning Gibbous7Fri
8Sat1:3519.52:0317.87:55-2.28:09-1.05:264:39Waning Gibbous8Sat
9Sun2:1719.02:5216.38:43-1.68:530.55:234:41Waning Gibbous9Sun
10Mon3:0118.03:4614.79:36-0.59:422.25:204:43Third Quarter10Mon
11Tue3:5116.74:5113.210:360.710:413.85:184:45Third Quarter11Tue
12Wed4:5115.26:1212.111:481.811:574.95:154:47Third Quarter12Wed
13Thu6:0714.17:4212.11:122.25:124:50Third Quarter13Thu
14Fri7:3213.88:5612.71:275.22:302.05:104:52Waning Crescent14Fri
15Sat8:4614.19:5013.62:464.63:301.55:074:54Waning Crescent15Sat
16Sun9:4314.710:3114.53:453.64:170.95:044:56Waning Crescent16Sun
17Mon10:2815.311:0615.34:312.64:540.55:014:58Waning Crescent17Mon
18Tue11:0715.811:3615.95:091.65:270.24:595:00New Moon18Tue
19Wed11:4216.15:430.85:570.14:565:02New Moon19Wed
20Thu12:0516.312:1516.26:150.36:250.34:535:04New Moon20Thu
21Fri12:3216.612:4716.06:46-0.16:530.64:515:07New Moon21Fri
22Sat12:5916.61:1915.77:18-0.17:211.14:485:09Waxing Crescent22Sat
23Sun1:2716.41:5215.17:500.07:491.84:455:11Waxing Crescent23Sun
24Mon1:5516.12:2714.38:230.48:202.64:425:13Waxing Crescent24Mon
25Tue2:2615.63:0713.39:011.08:553.54:405:15Waxing Crescent25Tue
26Wed3:0214.93:5612.49:471.79:384.54:375:17First Quarter26Wed
27Thu3:4814.14:5911.610:442.310:385.24:345:19First Quarter27Thu
28Fri4:5213.56:2011.411:572.54:325:21First Quarter28Fri
29Sat6:1513.27:4012.212:025.51:172.24:295:23First Quarter29Sat
30Sun7:4013.88:4413.51:344.92:261.34:265:26Waxing Gibbous30Sun
31Mon8:5014.99:3515.12:483.43:220.34:235:28Waxing Gibbous31Mon
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 4:53 am — 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 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 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.

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