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 2h 31m at 9:42 am (-2.0 ft)
Next high tide : 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 - May 1929

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:1712.46:2110.811:312.811:556.63:046:33Third Quarter1Wed
2Thu5:3711.87:3411.412:472.93:016:35Third Quarter2Thu
3Fri7:0211.88:2612.51:265.81:532.52:596:37Third Quarter3Fri
4Sat8:1312.59:0713.82:324.52:451.82:576:39Waning Crescent4Sat
5Sun9:1113.59:4415.13:222.73:291.32:546:41Waning Crescent5Sun
6Mon10:0114.510:1916.54:050.94:100.82:526:44Waning Crescent6Mon
7Tue10:4815.310:5517.64:46-0.84:490.62:506:46New Moon7Tue
8Wed11:3416.011:3218.55:27-2.35:280.72:486:48New Moon8Wed
9Thu12:2016.26:09-3.36:091.02:466:50New Moon9Thu
10Fri12:1218.91:0716.16:52-3.86:511.62:446:52Waxing Crescent10Fri
11Sat12:5318.81:5615.67:38-3.77:362.32:416:54Waxing Crescent11Sat
12Sun1:3818.22:4814.88:27-3.08:263.22:396:56Waxing Crescent12Sun
13Mon2:2817.13:4613.99:21-1.99:244.12:376:58Waxing Crescent13Mon
14Tue3:2615.74:5313.310:23-0.810:364.82:357:00First Quarter14Tue
15Wed4:3514.36:0613.111:310.32:337:02First Quarter15Wed
16Thu5:5713.27:1713.512:044.812:430.92:327:04First Quarter16Thu
17Fri7:2112.98:1614.31:304.01:491.22:307:06Waxing Gibbous17Fri
18Sat8:3313.09:0415.12:402.72:461.42:287:07Waxing Gibbous18Sat
19Sun9:3313.49:4515.83:341.43:341.52:267:09Waxing Gibbous19Sun
20Mon10:2313.810:2116.34:190.24:161.82:247:11Waxing Gibbous20Mon
21Tue11:0714.110:5516.64:58-0.74:542.12:237:13Full Moon21Tue
22Wed11:4714.211:2716.65:34-1.35:292.52:217:15Full Moon22Wed
23Thu12:2514.36:08-1.56:042.92:197:17Full Moon23Thu
24Fri1:0214.16:42-1.56:383.42:187:18Full Moon24Fri
25Sat12:3016.31:3813.87:16-1.27:123.92:167:20Waning Gibbous25Sat
26Sun1:0315.82:1513.37:51-0.77:484.42:157:22Waning Gibbous26Sun
27Mon1:3815.22:5612.78:28-0.18:264.92:137:23Waning Gibbous27Mon
28Tue2:1614.53:4012.29:090.59:125.32:127:25Waning Gibbous28Tue
29Wed2:5913.64:3111.99:541.210:085.62:117:27Third Quarter29Wed
30Thu3:5212.85:2811.910:461.711:185.62:097:28Third Quarter30Thu
31Fri4:5612.06:2612.311:442.12:087:30Third Quarter31Fri
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 12:47 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 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