Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently falling in Petersburg, AK.
Next low tide : in 4h 29m at 2:19 am (2.6 ft)
Next high tide : 8:22 am (10.6 ft)
Sunset today : 9:24 pm
Sunrise tomorrow : 4:32 am
Moon phase : First Quarter (54% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Oct 1967

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:2015.710:2316.94:07-0.44:241.74:544:28Waning Crescent1Sun
2Mon10:5617.211:0917.84:47-1.35:07-0.24:564:25New Moon2Mon
3Tue11:3218.511:5418.35:25-1.75:49-1.74:584:22New Moon3Tue
4Wed12:0819.46:03-1.66:31-2.85:004:20New Moon4Wed
5Thu12:4018.112:4519.86:42-0.97:14-3.15:034:17Waxing Crescent5Thu
6Fri1:2617.41:2419.57:210.27:59-2.75:054:14Waxing Crescent6Fri
7Sat2:1416.32:0518.68:031.78:48-1.75:074:12Waxing Crescent7Sat
8Sun3:0714.82:5117.38:493.39:44-0.35:094:09First Quarter8Sun
9Mon4:1013.43:4615.69:455.010:531.15:114:06First Quarter9Mon
10Tue5:3112.35:0014.111:016.25:134:04First Quarter10Tue
11Wed7:0612.26:3613.312:182.012:446.45:154:01First Quarter11Wed
12Thu8:2413.08:0413.51:442.12:165.65:173:59Waxing Gibbous12Thu
13Fri9:1814.09:0814.22:511.73:184.25:193:56Waxing Gibbous13Fri
14Sat9:5814.99:5714.83:401.34:042.85:213:53Waxing Gibbous14Sat
15Sun10:3115.710:3815.34:191.04:411.65:243:51Waxing Gibbous15Sun
16Mon11:0016.311:1415.64:510.95:150.65:263:48Full Moon16Mon
17Tue11:2616.811:4715.75:211.15:46-0.15:283:46Full Moon17Tue
18Wed11:5117.05:481.46:16-0.65:303:43Full Moon18Wed
19Thu12:2015.612:1617.06:151.96:46-0.75:323:41Full Moon19Thu
20Fri12:5315.312:4216.96:422.67:17-0.55:343:38Waning Gibbous20Fri
21Sat1:2614.81:0816.57:103.47:490.05:373:36Waning Gibbous21Sat
22Sun2:0114.11:3615.97:394.38:240.75:393:33Waning Gibbous22Sun
23Mon2:4013.22:0915.18:115.29:071.55:413:31Waning Gibbous23Mon
24Tue3:2812.32:5014.28:506.110:012.35:433:28Third Quarter24Tue
25Wed4:3211.53:4813.39:466.911:122.85:453:26Third Quarter25Wed
26Thu5:5611.45:1612.711:177.25:473:23Third Quarter26Thu
27Fri7:1612.16:5212.912:332.71:036.55:503:21Third Quarter27Fri
28Sat8:1413.58:0913.81:442.12:194.85:523:19Waning Crescent28Sat
29Sun8:5915.19:1015.02:401.33:142.75:543:16Waning Crescent29Sun
30Mon9:3916.810:0316.23:280.54:010.65:563:14Waning Crescent30Mon
31Tue10:1818.310:5217.04:110.14:46-1.45:583:12New 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 5:20 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 neap phase. Tonight's moon is 54% 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 minimum.

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 (54% illuminated). This places Petersburg, AK in a neap tide cycle, so tidal ranges are near their weekly minimum 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