Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Saturday, August 15, 2026
The tide is currently rising in Petersburg, AK.
Next low tide : 10:05 pm (-0.2 ft)
Next high tide : in 56m at 3:53 pm (17.3 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 - Sep 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:2717.81:0417.16:51-2.17:08-0.23:545:48Waning Gibbous1Sat
2Sun1:0817.61:3817.47:25-1.77:50-0.63:565:46Waning Gibbous2Sun
3Mon1:5017.02:1317.58:01-0.88:34-0.63:585:43Waning Gibbous3Mon
4Tue2:3615.92:5217.18:400.59:23-0.24:005:40Waning Gibbous4Tue
5Wed3:2714.43:3716.59:232.110:210.54:025:37Third Quarter5Wed
6Thu4:2913.04:3215.610:143.711:321.24:045:35Third Quarter6Thu
7Fri5:4911.95:4414.711:245.14:065:32Third Quarter7Fri
8Sat7:2511.87:1114.512:571.412:575.84:085:29Waning Crescent8Sat
9Sun8:4912.68:3215.12:191.02:295.34:105:27Waning Crescent9Sun
10Mon9:5013.89:3715.93:250.13:384.24:125:24Waning Crescent10Mon
11Tue10:3714.910:3016.74:17-0.74:312.94:145:21Waning Crescent11Tue
12Wed11:1615.911:1517.25:01-1.35:151.74:165:18New Moon12Wed
13Thu11:5116.511:5517.45:39-1.65:540.84:195:16New Moon13Thu
14Fri12:2316.96:14-1.46:300.24:215:13New Moon14Fri
15Sat12:3317.112:5317.06:47-0.97:05-0.14:235:10New Moon15Sat
16Sun1:0916.51:2216.87:17-0.17:390.04:255:08Waxing Crescent16Sun
17Mon1:4415.71:5016.47:471.08:130.44:275:05Waxing Crescent17Mon
18Tue2:1914.62:1815.78:172.28:491.14:295:02Waxing Crescent18Tue
19Wed2:5713.42:4914.98:483.69:292.04:314:59Waxing Crescent19Wed
20Thu3:4112.23:2514.09:234.910:182.94:334:57First Quarter20Thu
21Fri4:3911.14:1313.010:096.111:273.74:354:54First Quarter21Fri
22Sat6:0610.45:2612.311:237.04:374:51First Quarter22Sat
23Sun7:4810.76:5912.412:593.81:107.14:394:48First Quarter23Sun
24Mon8:5611.78:1713.22:193.12:336.24:414:46Waxing Gibbous24Mon
25Tue9:4013.09:1514.53:152.03:284.84:434:43Waxing Gibbous25Tue
26Wed10:1614.310:0215.73:580.84:113.24:454:40Waxing Gibbous26Wed
27Thu10:4915.610:4616.84:35-0.24:501.64:474:38Full Moon27Thu
28Fri11:2216.911:2817.65:10-1.05:290.14:494:35Full Moon28Fri
29Sat11:5417.95:45-1.46:08-1.24:514:32Full Moon29Sat
30Sun12:0918.012:2818.66:20-1.26:48-2.14:534:29Full Moon30Sun
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 6:59 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 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