Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Thursday, June 18, 2026
The tide is currently rising in Petersburg, AK.
Next low tide : 10:36 am (-3.1 ft)
Next high tide : in 4h 35m at 3:54 am (17.8 ft)
Sunset today : 9:47 pm
Sunrise tomorrow : 3:58 am
Moon phase : Waxing Crescent (11% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Aug 2012

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:4717.81:4615.97:28-2.67:361.24:539:02Full Moon1Wed
2Thu1:3518.22:2716.68:09-2.98:210.54:559:00Full Moon2Thu
3Fri2:2018.13:0516.98:48-2.79:040.24:578:58Full Moon3Fri
4Sat3:0217.63:4116.99:25-2.19:450.24:598:56Waning Gibbous4Sat
5Sun3:4216.64:1616.610:00-1.110:260.65:018:54Waning Gibbous5Sun
6Mon4:2215.54:5015.910:350.211:091.15:038:51Waning Gibbous6Mon
7Tue5:0314.15:2615.211:101.611:541.95:058:49Third Quarter7Tue
8Wed5:4712.76:0514.311:463.05:078:47Third Quarter8Wed
9Thu6:4111.46:5213.512:472.712:294.45:098:45Third Quarter9Thu
10Fri7:5010.47:5513.01:523.21:275.55:118:42Third Quarter10Fri
11Sat9:1910.29:1012.93:093.32:486.15:138:40Third Quarter11Sat
12Sun10:4010.710:2013.44:232.84:125.95:158:37Waning Crescent12Sun
13Mon11:3811.711:1714.35:211.95:175.25:178:35Waning Crescent13Mon
14Tue12:2012.86:060.96:064.25:198:33Waning Crescent14Tue
15Wed12:0415.212:5713.96:45-0.16:473.15:218:30New Moon15Wed
16Thu12:4516.11:3115.07:20-1.07:252.05:238:28New Moon16Thu
17Fri1:2516.82:0316.07:53-1.68:021.05:258:25New Moon17Fri
18Sat2:0317.32:3616.88:26-1.98:400.25:278:23New Moon18Sat
19Sun2:4217.33:1017.49:00-1.89:19-0.45:298:20Waxing Crescent19Sun
20Mon3:2217.03:4517.69:35-1.310:00-0.65:318:18Waxing Crescent20Mon
21Tue4:0516.24:2217.510:13-0.310:46-0.45:338:15Waxing Crescent21Tue
22Wed4:5115.15:0417.110:530.911:370.25:358:13Waxing Crescent22Wed
23Thu5:4513.85:5316.311:402.35:378:10First Quarter23Thu
24Fri6:5212.56:5415.512:390.912:393.75:398:07First Quarter24Fri
25Sat8:1711.88:1014.91:551.41:554.75:428:05First Quarter25Sat
26Sun9:4812.19:3415.03:201.43:254.95:448:02Waxing Gibbous26Sun
27Mon11:0213.110:4815.64:360.74:454.15:468:00Waxing Gibbous27Mon
28Tue11:5814.311:4816.45:37-0.25:482.95:487:57Waxing Gibbous28Tue
29Wed12:4315.56:27-1.06:391.65:507:54Full Moon29Wed
30Thu12:3917.11:2316.47:09-1.47:230.65:527:52Full Moon30Thu
31Fri1:2417.41:5917.07:47-1.68:04-0.25:547:49Full Moon31Fri
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 7:15 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 11% 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 (11% 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