Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently rising in Petersburg, AK.
Next low tide (tomorrow) : 3:07 am (1.7 ft)
Next high tide : in 3h 59m at 8:08 pm (14.9 ft)
Sunset today : 9:41 pm
Sunrise tomorrow : 4:12 am
Moon phase : Third Quarter (39% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Sep 1979

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:3611.68:2414.42:102.42:175.04:546:49Waxing Gibbous1Sat
2Sun9:4812.79:3515.53:251.43:344.24:566:46Waxing Gibbous2Sun
3Mon10:4514.210:3516.84:250.04:362.84:586:44Waxing Gibbous3Mon
4Tue11:3315.711:2918.15:16-1.35:291.35:006:41Waxing Gibbous4Tue
5Wed12:1717.16:02-2.46:18-0.25:026:38Full Moon5Wed
6Thu12:1918.912:5918.26:45-3.07:04-1.35:046:36Full Moon6Thu
7Fri1:0719.31:4018.97:27-3.07:50-2.05:066:33Full Moon7Fri
8Sat1:5419.02:2119.08:09-2.58:36-2.15:086:30Waning Gibbous8Sat
9Sun2:4018.23:0218.68:51-1.49:23-1.65:106:28Waning Gibbous9Sun
10Mon3:2816.93:4517.79:340.110:13-0.75:126:25Waning Gibbous10Mon
11Tue4:1915.34:3216.410:201.811:090.55:146:22Third Quarter11Tue
12Wed5:1713.75:2615.111:123.55:166:19Third Quarter12Wed
13Thu6:2812.46:3413.912:141.612:194.85:186:17Third Quarter13Thu
14Fri7:5411.87:5513.31:312.31:455.65:206:14Third Quarter14Fri
15Sat9:1612.29:1213.52:492.43:115.45:226:11Waning Crescent15Sat
16Sun10:1712.910:1214.13:552.04:154.65:246:09Waning Crescent16Sun
17Mon11:0213.811:0014.84:451.45:033.65:266:06Waning Crescent17Mon
18Tue11:3714.611:3915.55:260.85:412.65:286:03Waning Crescent18Tue
19Wed12:0915.36:010.36:151.85:306:00New Moon19Wed
20Thu12:1516.012:3815.96:320.16:471.05:325:58New Moon20Thu
21Fri12:4816.21:0616.47:020.07:180.55:345:55New Moon21Fri
22Sat1:2116.31:3416.67:310.27:490.25:365:52New Moon22Sat
23Sun1:5316.12:0216.78:000.68:200.15:385:49Waxing Crescent23Sun
24Mon2:2715.72:3116.58:291.28:530.35:405:47Waxing Crescent24Mon
25Tue3:0215.03:0216.29:012.09:300.75:425:44Waxing Crescent25Tue
26Wed3:4114.23:3815.79:362.910:131.25:445:41Waxing Crescent26Wed
27Thu4:2813.24:2115.010:184.011:061.85:465:38First Quarter27Thu
28Fri5:2812.45:1914.311:144.95:485:36First Quarter28Fri
29Sat6:4711.96:3513.812:152.312:315.55:505:33First Quarter29Sat
30Sun8:1312.48:0214.11:372.22:025.25:525:30First Quarter30Sun
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 11:37 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 39% 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 Third Quarter (39% 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