Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently falling in Petersburg, AK.
Next low tide : in 14m at 7:06 pm (2.3 ft)
Next high tide (tomorrow) : 1:08 am (18.2 ft)
Sunset today : 8:41 pm
Sunrise tomorrow : 5:12 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Oct 1933

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:3216.510:4016.64:18-0.34:410.74:554:27Full Moon1Sun
2Mon11:0717.411:2316.94:57-0.55:21-0.64:574:25Full Moon2Mon
3Tue11:4017.95:32-0.25:59-1.34:594:22Full Moon3Tue
4Wed12:0316.812:1018.06:050.36:35-1.65:014:19Full Moon4Wed
5Thu12:4116.412:4017.86:371.27:09-1.45:034:16Waning Gibbous5Thu
6Fri1:1715.71:0917.27:082.27:44-0.85:054:14Waning Gibbous6Fri
7Sat1:5414.81:3916.47:383.38:210.15:074:11Waning Gibbous7Sat
8Sun2:3213.72:1015.48:104.59:011.25:094:08Waning Gibbous8Sun
9Mon3:1512.52:4614.38:455.69:492.45:114:06Third Quarter9Mon
10Tue4:1011.53:3413.19:306.610:543.35:144:03Third Quarter10Tue
11Wed5:2710.84:4812.110:437.35:164:01Third Quarter11Wed
12Thu7:0111.06:2711.912:173.712:387.35:183:58Third Quarter12Thu
13Fri8:0911.87:4912.41:353.42:076.35:203:55Waning Crescent13Fri
14Sat8:5413.08:4813.42:322.73:014.85:223:53Waning Crescent14Sat
15Sun9:2914.49:3614.43:161.93:433.15:243:50Waning Crescent15Sun
16Mon10:0115.710:1915.43:531.24:201.45:263:48Waning Crescent16Mon
17Tue10:3217.011:0116.14:280.84:56-0.25:283:45New Moon17Tue
18Wed11:0418.111:4216.65:030.75:33-1.55:313:42New Moon18Wed
19Thu11:3818.95:380.86:11-2.45:333:40New Moon19Thu
20Fri12:2416.712:1419.36:141.26:52-2.85:353:37Waxing Crescent20Fri
21Sat1:0716.412:5219.26:531.97:35-2.65:373:35Waxing Crescent21Sat
22Sun1:5415.71:3418.67:352.88:22-1.85:393:32Waxing Crescent22Sun
23Mon2:4614.72:2217.58:223.99:17-0.75:413:30Waxing Crescent23Mon
24Tue3:4613.73:1916.19:195.010:220.55:443:28First Quarter24Tue
25Wed5:0013.04:3214.610:355.711:391.45:463:25First Quarter25Wed
26Thu6:2313.06:0213.812:115.75:483:23First Quarter26Thu
27Fri7:3713.87:3013.712:581.71:404.75:503:20Waxing Gibbous27Fri
28Sat8:3414.98:4114.22:061.62:483.15:523:18Waxing Gibbous28Sat
29Sun9:1916.09:3814.83:011.53:401.55:553:16Waxing Gibbous29Sun
30Mon9:5816.910:2615.33:471.54:240.15:573:13Waxing Gibbous30Mon
31Tue10:3317.511:0915.54:261.65:03-0.95:593:11Full Moon31Tue
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 10:07 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 1% 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 New Moon (1% 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