Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in Petersburg, AK.
Next low tide (tomorrow) : 3:32 am (2.6 ft)
Next high tide : in 5h 36m at 8:16 pm (13.8 ft)
Sunset today : 9:22 pm
Sunrise tomorrow : 4:33 am
Moon phase : First Quarter (63% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Aug 1966

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:4214.56:22-1.46:233.02:517:04Full Moon1Mon
2Tue12:1616.51:1414.76:55-1.46:582.72:537:02Full Moon2Tue
3Wed12:5116.31:4414.87:26-1.27:332.52:557:00Waning Gibbous3Wed
4Thu1:2515.92:1314.77:56-0.78:082.42:576:58Waning Gibbous4Thu
5Fri1:5915.22:4214.68:250.08:452.52:596:56Waning Gibbous5Fri
6Sat2:3514.33:1214.48:540.99:242.73:016:53Waning Gibbous6Sat
7Sun3:1413.23:4514.19:251.910:103.03:036:51Third Quarter7Sun
8Mon3:5912.14:2213.810:003.111:043.23:056:49Third Quarter8Mon
9Tue4:5711.15:1013.610:444.33:076:47Third Quarter9Tue
10Wed6:1410.56:1213.612:133.111:44 AM5.33:096:44Third Quarter10Wed
11Thu7:4310.57:2514.01:302.61:045.83:116:42Waning Crescent11Thu
12Fri9:0211.48:3514.92:421.62:275.63:136:40Waning Crescent12Fri
13Sat10:0212.69:3716.13:410.23:344.83:156:37Waning Crescent13Sat
14Sun10:5114.010:3117.44:32-1.34:303.53:176:35New Moon14Sun
15Mon11:3515.211:2118.45:18-2.55:192.23:196:32New Moon15Mon
16Tue12:1616.46:01-3.46:061.03:216:30New Moon16Tue
17Wed12:0919.012:5617.36:42-3.86:530.03:236:27New Moon17Wed
18Thu12:5618.91:3617.87:23-3.57:40-0.53:256:25Waxing Crescent18Thu
19Fri1:4318.22:1617.98:03-2.68:28-0.63:276:22Waxing Crescent19Fri
20Sat2:3116.92:5717.68:45-1.29:19-0.23:296:20Waxing Crescent20Sat
21Sun3:2315.33:4116.89:280.610:150.53:316:17First Quarter21Sun
22Mon4:2113.54:3015.810:172.511:211.33:346:15First Quarter22Mon
23Tue5:3312.05:3014.811:154.33:366:12First Quarter23Tue
24Wed7:0411.36:4414.112:391.812:325.53:386:10First Quarter24Wed
25Thu8:3511.58:0314.02:021.82:015.93:406:07Waxing Gibbous25Thu
26Fri9:4412.49:1114.53:131.33:165.43:426:05Waxing Gibbous26Fri
27Sat10:3313.210:0515.14:080.74:114.63:446:02Waxing Gibbous27Sat
28Sun11:1114.010:4815.74:510.04:543.73:465:59Waxing Gibbous28Sun
29Mon11:4314.611:2516.25:27-0.45:312.83:485:57Full Moon29Mon
30Tue12:1315.15:58-0.76:052.13:505:54Full Moon30Tue
31Wed12:4015.56:27-0.86:371.53:525:51Full Moon31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9451439)

Common Questions About Petersburg, AK Tides

Show All
What time does the tide turn (slack tide) in Petersburg, AK today?

Slack tide in Petersburg, AK is approximately 11:54 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 transitional phase. Tonight's moon is 63% 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 (63% 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