Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Saturday, August 15, 2026
The tide is currently falling in Petersburg, AK.
Next low tide : in 5h 21m at 10:05 pm (-0.2 ft)
Next high tide (tomorrow) : 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 - Jul 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:3913.111:0415.95:19-0.55:114.12:037:47Full Moon1Sun
2Mon12:1713.65:55-1.05:493.92:047:46Full Moon2Mon
3Tue12:5413.96:30-1.46:273.72:057:46Full Moon3Tue
4Wed12:1916.41:3014.17:06-1.67:053.52:067:45Full Moon4Wed
5Thu12:5716.42:0614.27:41-1.77:443.42:077:44Waning Gibbous5Thu
6Fri1:3616.12:4414.28:18-1.58:273.42:087:43Waning Gibbous6Fri
7Sat2:1815.63:2414.28:56-1.19:153.32:107:43Waning Gibbous7Sat
8Sun3:0414.84:0714.39:38-0.410:103.22:117:42Third Quarter8Sun
9Mon3:5713.84:5414.510:240.511:142.92:127:41Third Quarter9Mon
10Tue5:0112.75:4814.811:171.62:137:40Third Quarter10Tue
11Wed6:1612.16:4615.312:242.212:172.62:157:39Third Quarter11Wed
12Thu7:3712.07:4715.91:361.21:243.32:167:37Waning Crescent12Thu
13Fri8:5412.58:4716.62:440.02:333.62:187:36Waning Crescent13Fri
14Sat10:0013.39:4417.43:44-1.33:373.52:197:35Waning Crescent14Sat
15Sun10:5814.310:3918.04:38-2.44:353.12:217:33New Moon15Sun
16Mon11:4915.011:3018.45:28-3.25:282.62:227:32New Moon16Mon
17Tue12:3515.66:15-3.66:172.22:247:31New Moon17Tue
18Wed12:1918.41:1915.87:00-3.57:042.02:267:29Waxing Crescent18Wed
19Thu1:0517.92:0115.87:42-3.17:512.02:277:28Waxing Crescent19Thu
20Fri1:5017.12:4215.58:24-2.28:372.22:297:26Waxing Crescent20Fri
21Sat2:3415.83:2215.19:04-1.09:252.52:317:24Waxing Crescent21Sat
22Sun3:1914.44:0214.59:440.310:173.02:337:23First Quarter22Sun
23Mon4:0812.94:4414.010:261.811:143.32:347:21First Quarter23Mon
24Tue5:0511.65:3113.611:113.22:367:19First Quarter24Tue
25Wed6:1610.66:2413.312:203.412:064.42:387:17First Quarter25Wed
26Thu7:3710.37:2313.41:313.11:105.22:407:16Waxing Gibbous26Thu
27Fri8:5310.78:2113.72:372.62:185.52:427:14Waxing Gibbous27Fri
28Sat9:5311.49:1514.33:321.83:195.42:447:12Waxing Gibbous28Sat
29Sun10:4012.310:0315.14:190.94:094.92:467:10Waxing Gibbous29Sun
30Mon11:2013.110:4615.84:590.04:534.32:477:08Full Moon30Mon
31Tue11:5713.811:2616.55:36-0.95:333.62:497:06Full 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 1:05 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