Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Thursday, June 18, 2026
The tide is currently falling in Petersburg, AK.
Next low tide : in 1h 24m at 10:36 am (-3.1 ft)
Next high tide : 4:59 pm (15.5 ft)
Sunset today : 9:48 pm
Sunrise tomorrow : 3:58 am
Moon phase : Waxing Crescent (19% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Nov 2011

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:1314.15:5414.912:004.88:015:09First Quarter1Tue
2Wed7:2213.57:0513.512:461.31:175.38:045:06First Quarter2Wed
3Thu8:3413.58:2812.71:552.32:435.18:065:04First Quarter3Thu
4Fri9:3813.99:4712.63:062.93:584.38:085:02Waxing Gibbous4Fri
5Sat10:3014.510:5013.04:083.14:563.18:105:00Waxing Gibbous5Sat
6Sun10:1215.210:4113.53:583.24:412.07:123:58Waxing Gibbous6Sun
7Mon10:4815.911:2314.14:403.25:201.07:153:56Waxing Gibbous7Mon
8Tue11:2016.45:173.25:550.17:173:53Full Moon8Tue
9Wed12:0114.511:51 AM16.85:513.26:28-0.57:193:51Full Moon9Wed
10Thu12:3714.912:2217.16:233.37:01-0.87:213:49Full Moon10Thu
11Fri1:1215.012:5317.26:553.57:33-0.97:233:47Full Moon11Fri
12Sat1:4715.01:2517.07:273.78:07-0.87:253:46Full Moon12Sat
13Sun2:2314.81:5816.78:014.08:42-0.57:283:44Waning Gibbous13Sun
14Mon3:0114.52:3316.28:364.49:20-0.17:303:42Waning Gibbous14Mon
15Tue3:4114.03:1315.59:174.810:030.57:323:40Waning Gibbous15Tue
16Wed4:2713.74:0114.710:065.210:511.17:343:38Third Quarter16Wed
17Thu5:2013.55:0113.711:075.411:481.87:363:36Third Quarter17Thu
18Fri6:2013.76:1613.012:245.27:383:35Third Quarter18Fri
19Sat7:2214.47:3912.912:512.31:454.27:403:33Third Quarter19Sat
20Sun8:2115.48:5713.41:572.52:572.77:423:32Waning Crescent20Sun
21Mon9:1616.710:0414.33:002.53:580.87:443:30Waning Crescent21Mon
22Tue10:0618.011:0215.33:572.44:51-0.97:463:29Waning Crescent22Tue
23Wed10:5419.111:5616.14:502.25:40-2.37:483:27New Moon23Wed
24Thu11:4219.85:402.06:27-3.37:503:26New Moon24Thu
25Fri12:4616.712:2820.16:282.07:13-3.77:523:24New Moon25Fri
26Sat1:3416.91:1519.97:162.17:59-3.57:543:23New Moon26Sat
27Sun2:2116.82:0119.38:032.48:44-2.87:563:22Waxing Crescent27Sun
28Mon3:0816.42:4818.18:522.99:30-1.77:583:21Waxing Crescent28Mon
29Tue3:5615.83:3616.69:433.610:18-0.48:003:20Waxing Crescent29Tue
30Wed4:4715.14:2815.010:404.211:081.08:013:19First Quarter30Wed
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 1:47 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 19% 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 (19% 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