Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in Petersburg, AK.
Next low tide : in 5h 32m at 2:45 pm (4.1 ft)
Next high tide : 9:10 pm (15.3 ft)
Sunset today : 9:40 pm
Sunrise tomorrow : 4:13 am
Moon phase : Waning Crescent (28% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Aug 2062

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:1211.810:4516.04:490.44:355.24:539:03Waning Crescent1Tue
2Wed12:1513.15:52-1.05:464.34:559:00Waning Crescent2Wed
3Thu1:0714.46:46-2.36:453.14:578:58New Moon3Thu
4Fri12:4718.11:5215.67:34-3.37:371.94:598:56New Moon4Fri
5Sat1:3918.82:3516.68:18-3.98:260.85:018:54New Moon5Sat
6Sun2:2818.93:1517.29:00-3.89:130.15:038:52Waxing Crescent6Sun
7Mon3:1418.43:5417.59:40-3.29:59-0.15:058:49Waxing Crescent7Mon
8Tue4:0017.44:3317.310:20-2.010:460.05:078:47Waxing Crescent8Tue
9Wed4:4715.85:1116.710:59-0.411:360.65:098:45Waxing Crescent9Wed
10Thu5:3614.15:5215.911:391.45:118:42First Quarter10Thu
11Fri6:3212.46:3614.812:301.412:233.35:138:40First Quarter11Fri
12Sat7:4111.07:3113.91:332.21:165.05:158:38First Quarter12Sat
13Sun9:1410.38:4113.22:492.72:296.25:178:35First Quarter13Sun
14Mon10:4710.69:5913.24:112.63:596.55:198:33Waxing Gibbous14Mon
15Tue11:5211.511:0613.75:202.15:146.15:218:30Waxing Gibbous15Tue
16Wed12:3712.36:111.36:075.25:238:28Waxing Gibbous16Wed
17Thu1:1213.26:510.56:494.35:258:26Waxing Gibbous17Thu
18Fri12:4015.31:4213.97:25-0.27:253.45:278:23Full Moon18Fri
19Sat1:1715.92:1114.67:55-0.87:592.55:298:21Full Moon19Sat
20Sun1:5216.32:3815.28:23-1.18:311.85:318:18Full Moon20Sun
21Mon2:2516.53:0415.78:50-1.19:031.25:338:15Full Moon21Mon
22Tue2:5816.33:3016.09:17-0.89:360.95:358:13Waning Gibbous22Tue
23Wed3:3215.83:5716.19:45-0.110:110.75:378:10Waning Gibbous23Wed
24Thu4:0815.14:2616.110:140.810:500.85:398:08Waning Gibbous24Thu
25Fri4:4914.04:5815.810:461.911:361.25:418:05Waning Gibbous25Fri
26Sat5:3612.85:3815.411:243.35:438:03Third Quarter26Sat
27Sun6:3811.66:3214.812:321.612:124.65:458:00Third Quarter27Sun
28Mon8:0410.87:4814.31:462.01:225.85:487:57Third Quarter28Mon
29Tue9:4611.19:2014.63:151.83:026.25:507:55Waning Crescent29Tue
30Wed11:0612.210:4115.54:360.84:365.45:527:52Waning Crescent30Wed
31Thu12:0213.75:39-0.55:453.95:547:49Waning Crescent31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9451439)

Common Questions About Petersburg, AK Tides

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

Slack tide in Petersburg, AK is approximately 5:57 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 Waning 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