Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in Petersburg, AK.
Next low tide (tomorrow) : in 5h 06m at 12:51 am (2.9 ft)
Next high tide (tomorrow) : 6:42 am (13.3 ft)
Sunset today : 9:48 pm
Sunrise tomorrow : 3:58 am
Moon phase : First Quarter (39% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Mar 2038

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon9:5014.911:1213.63:495.34:480.76:425:25Waning Crescent1Mon
2Tue10:5115.611:5714.54:544.55:370.06:405:27Waning Crescent2Tue
3Wed11:3916.25:433.56:17-0.66:375:29Waning Crescent3Wed
4Thu12:3415.212:2016.76:242.66:51-0.96:345:31New Moon4Thu
5Fri1:0615.812:5716.97:001.87:23-0.96:325:34New Moon5Fri
6Sat1:3616.11:3116.87:341.27:52-0.76:295:36New Moon6Sat
7Sun2:0316.32:0316.58:070.98:20-0.36:275:38New Moon7Sun
8Mon2:3016.32:3515.98:390.88:470.46:245:40Waxing Crescent8Mon
9Tue2:5616.13:0815.19:111.09:141.36:215:42Waxing Crescent9Tue
10Wed3:2315.73:4314.19:451.39:432.46:195:44Waxing Crescent10Wed
11Thu3:5215.24:2213.010:231.910:143.66:165:46Waxing Crescent11Thu
12Fri4:2514.55:1111.911:092.510:534.76:135:49First Quarter12Fri
13Sat5:0813.86:1810.912:083.16:105:51First Quarter13Sat
14Sun7:0813.28:5010.62:283.27:086:53First Quarter14Sun
15Mon8:3213.110:1911.32:126.43:522.77:056:55First Quarter15Mon
16Tue9:5713.811:2212.63:516.15:001.47:026:57Waxing Gibbous16Tue
17Wed11:0515.05:064.95:520.07:006:59Waxing Gibbous17Wed
18Thu12:1014.112:0116.46:023.36:38-1.36:577:01Waxing Gibbous18Thu
19Fri12:5115.712:5117.76:491.57:19-2.36:547:04Full Moon19Fri
20Sat1:3017.21:3718.57:34-0.17:59-2.86:527:06Full Moon20Sat
21Sun2:0818.32:2318.98:18-1.48:39-2.76:497:08Full Moon21Sun
22Mon2:4719.13:0918.69:02-2.39:18-2.16:467:10Waning Gibbous22Mon
23Tue3:2519.33:5517.79:46-2.59:59-0.96:437:12Waning Gibbous23Tue
24Wed4:0618.94:4416.310:33-2.110:420.66:417:14Waning Gibbous24Wed
25Thu4:4818.05:3714.711:24-1.111:292.46:387:16Waning Gibbous25Thu
26Fri5:3516.76:4113.112:220.16:357:18Third Quarter26Fri
27Sat6:3215.28:0212.112:264.11:321.36:337:21Third Quarter27Sat
28Sun7:4513.99:3611.91:415.32:572.06:307:23Third Quarter28Sun
29Mon9:1513.410:5312.63:165.74:191.96:277:25Waning Crescent29Mon
30Tue10:3513.711:4813.54:415.15:231.46:247:27Waning Crescent30Tue
31Wed11:3614.35:424.06:110.86:227:29Waning Crescent31Wed
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 3:46 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 transitional phase. Tonight's moon is 39% 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 shifting between spring and neap.

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 First Quarter (39% illuminated). This places Petersburg, AK in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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