Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Sunday, August 16, 2026
The tide is currently falling in Petersburg, AK.
Next low tide : in 5h 37m at 10:47 pm (0.3 ft)
Next high tide (tomorrow) : 4:48 am (14.8 ft)
Sunset today : 8:29 pm
Sunrise tomorrow : 5:22 am
Moon phase : Waxing Crescent (20% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Aug 1926

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:5112.46:1815.011:512.92:507:05Third Quarter1Sun
2Mon7:1411.77:2414.81:081.61:014.12:527:03Waning Crescent2Mon
3Tue8:3511.88:2914.92:201.22:154.62:547:01Waning Crescent3Tue
4Wed9:4312.49:2715.33:230.53:224.52:566:58Waning Crescent4Wed
5Thu10:3513.110:1615.74:15-0.14:164.22:586:56Waning Crescent5Thu
6Fri11:1813.810:5916.14:59-0.75:013.73:006:54New Moon6Fri
7Sat11:5514.311:3816.45:38-1.15:403.23:026:52New Moon7Sat
8Sun12:2814.76:13-1.36:162.73:046:50New Moon8Sun
9Mon12:1416.412:5915.06:46-1.36:502.43:066:47New Moon9Mon
10Tue12:4716.31:2915.17:17-1.17:232.23:086:45Waxing Crescent10Tue
11Wed1:2115.91:5815.17:47-0.77:572.23:106:43Waxing Crescent11Wed
12Thu1:5415.32:2814.98:17-0.18:322.33:126:40Waxing Crescent12Thu
13Fri2:2914.53:0014.78:480.89:102.63:146:38Waxing Crescent13Fri
14Sat3:0713.53:3414.49:211.89:542.83:166:35First Quarter14Sat
15Sun3:5212.44:1414.19:592.910:493.13:186:33First Quarter15Sun
16Mon4:5111.45:0513.810:474.011:573.13:206:31First Quarter16Mon
17Tue6:0810.86:0913.911:514.93:236:28First Quarter17Tue
18Wed7:3711.07:2114.31:162.61:105.23:256:26Waxing Gibbous18Wed
19Thu8:5411.98:3015.32:301.52:274.93:276:23Waxing Gibbous19Thu
20Fri9:5313.29:3116.63:310.13:323.93:296:21Waxing Gibbous20Fri
21Sat10:4314.610:2617.84:23-1.34:272.63:316:18Waxing Gibbous21Sat
22Sun11:2816.011:1718.85:09-2.65:171.33:336:16Full Moon22Sun
23Mon12:1017.15:53-3.46:050.13:356:13Full Moon23Mon
24Tue12:0519.312:5117.86:36-3.66:51-0.73:376:11Full Moon24Tue
25Wed12:5219.21:3218.27:17-3.37:38-1.13:396:08Waning Gibbous25Wed
26Thu1:4018.52:1418.17:59-2.48:27-1.03:416:05Waning Gibbous26Thu
27Fri2:2817.22:5617.58:41-1.09:18-0.43:436:03Waning Gibbous27Fri
28Sat3:1915.53:4216.69:260.810:140.53:456:00Third Quarter28Sat
29Sun4:1713.84:3415.510:162.611:191.43:475:57Third Quarter29Sun
30Mon5:2712.35:3614.511:174.33:495:55Third Quarter30Mon
31Tue6:5411.66:5213.812:361.912:365.43:515:52Third Quarter31Tue
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 1:47 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 20% 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 (20% 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