Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Saturday, August 15, 2026
The tide is currently rising in Petersburg, AK.
Next low tide : 9:42 am (-2.0 ft)
Next high tide : in 1h 53m at 3:24 am (17.5 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 5:20 am
Moon phase : Waxing Crescent (12% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Nov 1929

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:3718.35:361.26:10-1.76:013:09New Moon1Fri
2Sat12:2216.112:0818.26:111.96:45-1.76:033:07New Moon2Sat
3Sun1:0015.712:3917.76:442.77:19-1.26:063:04Waxing Crescent3Sun
4Mon1:3815.01:1017.07:173.77:55-0.46:083:02Waxing Crescent4Mon
5Tue2:1614.21:4316.07:524.68:320.66:103:00Waxing Crescent5Tue
6Wed2:5913.32:1914.98:295.69:151.66:122:58Waxing Crescent6Wed
7Thu3:4912.43:0313.89:156.510:082.66:142:56First Quarter7Thu
8Fri4:5211.74:0112.710:197.111:143.36:172:54First Quarter8Fri
9Sat6:0911.75:2112.011:507.26:192:52First Quarter9Sat
10Sun7:1912.26:4811.912:293.51:206.46:212:50First Quarter10Sun
11Mon8:1013.28:0012.51:343.32:235.06:232:48Waxing Gibbous11Mon
12Tue8:5014.48:5713.42:262.93:103.46:252:46Waxing Gibbous12Tue
13Wed9:2515.69:4514.43:102.43:511.76:282:44Waxing Gibbous13Wed
14Thu9:5816.910:3115.33:492.14:300.06:302:42Waxing Gibbous14Thu
15Fri10:3318.011:1516.04:271.95:08-1.46:322:40Full Moon15Fri
16Sat11:0818.911:5916.45:051.95:48-2.56:342:38Full Moon16Sat
17Sun11:4619.45:442.16:29-3.16:362:37Full Moon17Sun
18Mon12:4416.412:2619.46:252.57:12-3.16:382:35Waning Gibbous18Mon
19Tue1:3016.11:0919.07:083.17:59-2.66:402:33Waning Gibbous19Tue
20Wed2:2015.51:5718.17:563.88:50-1.76:422:32Waning Gibbous20Wed
21Thu3:1614.82:5216.88:514.69:48-0.66:442:30Waning Gibbous21Thu
22Fri4:1814.23:5715.39:595.310:530.56:462:29Third Quarter22Fri
23Sat5:2914.05:1614.011:235.46:482:27Third Quarter23Sat
24Sun6:4014.36:4313.412:041.312:544.86:502:26Third Quarter24Sun
25Mon7:4315.18:0213.51:121.82:093.56:522:25Waning Crescent25Mon
26Tue8:3516.09:0713.92:132.13:092.06:542:23Waning Crescent26Tue
27Wed9:1916.810:0214.43:062.33:570.66:562:22Waning Crescent27Wed
28Thu9:5817.310:4914.83:522.64:39-0.46:582:21Waning Crescent28Thu
29Fri10:3417.711:3215.04:332.95:17-1.17:002:20New Moon29Fri
30Sat11:0917.85:123.25:53-1.47:022:19New Moon30Sat
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 6:33 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 12% 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 (12% 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