Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Saturday, August 15, 2026
The tide is currently falling in Petersburg, AK.
Next low tide : in 4h 35m at 10:05 pm (-0.2 ft)
Next high tide (tomorrow) : 4:06 am (16.3 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 - Jun 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:1713.410:5516.05:06-0.34:583.02:077:31Full Moon1Fri
2Sat11:5513.711:2716.25:39-0.95:333.22:067:33Full Moon2Sat
3Sun12:3113.96:12-1.26:073.42:057:34Full Moon3Sun
4Mon12:0016.31:0713.96:46-1.36:423.62:047:35Full Moon4Mon
5Tue12:3416.21:4413.77:20-1.27:173.92:037:37Waning Gibbous5Tue
6Wed1:0915.92:2313.47:56-1.07:554.32:027:38Waning Gibbous6Wed
7Thu1:4715.43:0513.18:35-0.68:384.62:017:39Waning Gibbous7Thu
8Fri2:2814.83:5112.89:18-0.29:294.82:017:40Waning Gibbous8Fri
9Sat3:1714.14:4312.810:060.410:314.82:007:41Third Quarter9Sat
10Sun4:1513.25:3913.111:000.911:434.31:597:42Third Quarter10Sun
11Mon5:2612.66:3613.811:591.41:597:43Third Quarter11Mon
12Tue6:4312.47:3114.812:573.31:011.71:587:44Third Quarter12Tue
13Wed7:5912.78:2315.92:051.82:022.01:587:44Waning Crescent13Wed
14Thu9:0713.39:1317.13:050.03:002.11:587:45Waning Crescent14Thu
15Fri10:0814.210:0218.03:59-1.63:542.11:577:46Waning Crescent15Fri
16Sat11:0414.910:5118.74:49-3.04:462.01:577:46New Moon16Sat
17Sun11:5615.511:3919.05:38-3.95:362.01:577:47New Moon17Sun
18Mon12:4615.76:26-4.26:262.21:577:47New Moon18Mon
19Tue12:2818.81:3515.77:13-4.07:152.41:577:48Waxing Crescent19Tue
20Wed1:1618.22:2315.48:00-3.48:062.81:577:48Waxing Crescent20Wed
21Thu2:0517.13:1114.98:48-2.48:593.21:587:48Waxing Crescent21Thu
22Fri2:5515.74:0114.39:37-1.29:573.71:587:48Waxing Crescent22Fri
23Sat3:4914.24:5313.910:270.111:013.91:587:49First Quarter23Sat
24Sun4:4812.85:4713.611:191.31:597:49First Quarter24Sun
25Mon5:5711.66:4113.512:113.912:142.51:597:49First Quarter25Mon
26Tue7:1111.17:3313.71:213.41:113.32:007:48First Quarter26Tue
27Wed8:2211.08:2014.12:232.72:073.92:007:48Waxing Gibbous27Wed
28Thu9:2311.49:0414.53:161.83:004.22:017:48Waxing Gibbous28Thu
29Fri10:1412.09:4615.04:010.93:474.32:027:48Waxing Gibbous29Fri
30Sat10:5912.610:2515.54:420.24:314.22:027:47Waxing Gibbous30Sat
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 1:05 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