Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Sunday, August 16, 2026
The tide is currently rising in Petersburg, AK.
Next low tide : 10:18 am (-0.7 ft)
Next high tide : in 4h 07m at 4:06 am (16.3 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 - Jan 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:3015.67:0212.61:092.77:282:21First Quarter1Sun
2Mon7:2916.28:2312.91:013.32:201.47:282:22Waxing Gibbous2Mon
3Tue8:2717.19:3313.72:083.83:21-0.17:282:24Waxing Gibbous3Tue
4Wed9:2317.910:3314.63:123.94:16-1.47:272:25Waxing Gibbous4Wed
5Thu10:1518.511:2515.44:103.85:06-2.37:272:26Full Moon5Thu
6Fri11:0518.95:033.55:52-2.97:262:28Full Moon6Fri
7Sat12:1316.011:52 AM19.05:513.36:36-3.07:262:29Full Moon7Sat
8Sun12:5716.212:3718.76:383.17:19-2.77:252:31Full Moon8Sun
9Mon1:3916.21:2018.07:233.18:00-2.07:242:33Waning Gibbous9Mon
10Tue2:2016.02:0317.08:073.38:39-1.17:232:34Waning Gibbous10Tue
11Wed2:5915.52:4515.78:533.79:190.17:222:36Waning Gibbous11Wed
12Thu3:3915.03:3014.29:414.09:591.47:212:38Third Quarter12Thu
13Fri4:2114.54:2012.810:354.410:412.87:202:39Third Quarter13Fri
14Sat5:0514.15:2211.511:374.511:294.07:192:41Third Quarter14Sat
15Sun5:5513.96:3810.812:484.47:182:43Third Quarter15Sun
16Mon6:4913.98:0210.812:275.11:583.87:172:45Third Quarter16Mon
17Tue7:4614.29:1311.41:325.72:592.97:162:47Waning Crescent17Tue
18Wed8:4014.710:0912.22:375.93:501.97:142:49Waning Crescent18Wed
19Thu9:3015.510:5413.13:335.74:330.87:132:51Waning Crescent19Thu
20Fri10:1516.311:3414.04:225.25:12-0.27:122:53Waning Crescent20Fri
21Sat10:5817.15:054.65:49-1.17:102:55New Moon21Sat
22Sun12:1114.811:39 AM17.75:453.96:25-1.87:092:57New Moon22Sun
23Mon12:4615.412:1918.26:243.37:01-2.27:072:59New Moon23Mon
24Tue1:2215.912:5918.27:042.87:37-2.37:063:01Waxing Crescent24Tue
25Wed1:5816.21:4017.87:462.48:14-1.97:043:03Waxing Crescent25Wed
26Thu2:3516.42:2417.08:312.28:52-1.17:023:06Waxing Crescent26Thu
27Fri3:1516.43:1315.79:212.19:340.17:003:08Waxing Crescent27Fri
28Sat3:5816.34:0914.210:172.210:201.66:593:10First Quarter28Sat
29Sun4:4716.15:1712.811:232.311:153.16:573:12First Quarter29Sun
30Mon5:4515.86:4112.012:392.16:553:14First Quarter30Mon
31Tue6:5215.88:1212.012:244.41:581.46:533:17Waxing Gibbous31Tue
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 7:12 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 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