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 pm (3.0 ft)
Next high tide : in 4h 18m at 2:34 pm (14.3 ft)
Sunset today : 9:09 pm
Sunrise tomorrow : 4:46 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Feb 1957

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:0616.012:5416.87:002.17:18-0.66:493:21New Moon1Fri
2Sat1:3416.11:2616.37:331.97:46-0.16:473:23Waxing Crescent2Sat
3Sun2:0216.11:5915.68:072.08:140.66:453:26Waxing Crescent3Sun
4Mon2:3015.92:3414.78:422.18:441.46:433:28Waxing Crescent4Mon
5Tue3:0115.63:1413.79:222.59:172.56:413:30Waxing Crescent5Tue
6Wed3:3715.34:0312.510:102.89:573.66:393:32First Quarter6Wed
7Thu4:2114.95:0711.511:103.110:504.76:373:35First Quarter7Thu
8Fri5:1914.66:3211.112:273.06:343:37First Quarter8Fri
9Sat6:3414.68:0311.612:045.51:482.36:323:39Waxing Gibbous9Sat
10Sun7:5315.29:1512.81:345.52:571.06:303:41Waxing Gibbous10Sun
11Mon9:0216.410:1014.42:534.73:54-0.56:283:44Waxing Gibbous11Mon
12Tue10:0117.710:5816.03:573.34:43-1.96:253:46Waxing Gibbous12Tue
13Wed10:5418.811:4117.44:501.85:28-2.96:233:48Full Moon13Wed
14Thu11:4319.55:390.46:10-3.56:213:51Full Moon14Thu
15Fri12:2218.512:3019.66:26-0.76:51-3.46:183:53Full Moon15Fri
16Sat1:0319.11:1619.17:12-1.37:32-2.76:163:55Waning Gibbous16Sat
17Sun1:4319.32:0218.07:58-1.38:13-1.56:143:57Waning Gibbous17Sun
18Mon2:2418.82:5016.58:45-0.88:550.16:114:00Waning Gibbous18Mon
19Tue3:0617.93:4114.79:360.29:401.96:094:02Third Quarter19Tue
20Wed3:5216.74:4013.010:331.310:323.66:064:04Third Quarter20Wed
21Thu4:4615.35:5611.711:422.311:375.16:044:06Third Quarter21Thu
22Fri5:5314.27:3011.31:052.96:014:09Third Quarter22Fri
23Sat7:1413.78:5211.81:025.82:262.65:594:11Waning Crescent23Sat
24Sun8:3013.99:5012.62:285.73:292.05:564:13Waning Crescent24Sun
25Mon9:2914.510:3313.63:324.94:151.35:544:15Waning Crescent25Mon
26Tue10:1515.211:0714.44:203.94:530.65:514:17Waning Crescent26Tue
27Wed10:5415.811:3715.24:593.05:250.15:494:20New Moon27Wed
28Thu11:3016.35:342.15:54-0.25:464:22New Moon28Thu
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 5:24 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 100% 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 (100% 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