Tides Today & Tomorrow in Petersburg, AK

TIDE TIMES for Thursday, August 6, 2026
The tide is currently falling in Petersburg, AK.
Next low tide : in 5h 23m at 12:59 pm (4.2 ft)
Next high tide : 7:25 pm (15.0 ft)
Sunset today : 8:52 pm
Sunrise tomorrow : 5:02 am
Moon phase : Third Quarter (42% illuminated)
Tide Station Location : Station #9451439
Common Questions About Tides

Petersburg, AK Tides - Mar 1942

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:1514.912:0916.86:102.66:38-1.16:445:23Full Moon1Sun
2Mon12:4916.012:4717.46:471.57:12-1.66:425:26Full Moon2Mon
3Tue1:2116.91:2517.87:230.67:46-1.86:395:28Full Moon3Tue
4Wed1:5517.52:0417.78:01-0.18:20-1.66:375:30Waning Gibbous4Wed
5Thu2:2917.92:4517.38:40-0.58:56-0.96:345:32Waning Gibbous5Thu
6Fri3:0517.93:2816.39:23-0.59:350.16:315:34Waning Gibbous6Fri
7Sat3:4417.64:1715.110:10-0.110:191.46:295:36Waning Gibbous7Sat
8Sun4:2916.95:1513.711:040.611:112.96:265:39Third Quarter8Sun
9Mon5:2216.06:2812.612:111.36:235:41Third Quarter9Mon
10Tue6:3015.17:5812.212:174.11:321.76:215:43Third Quarter10Tue
11Wed7:5214.89:2412.81:414.82:561.46:185:45Waning Crescent11Wed
12Thu9:1415.110:3014.03:094.54:070.66:155:47Waning Crescent12Thu
13Fri10:2215.911:2215.24:213.55:03-0.36:135:49Waning Crescent13Fri
14Sat11:1716.75:182.25:49-1.16:105:51Waning Crescent14Sat
15Sun12:0516.312:0517.46:051.06:30-1.46:075:54New Moon15Sun
16Mon12:4417.012:4817.66:470.17:07-1.56:045:56New Moon16Mon
17Tue1:1917.51:2717.57:26-0.57:42-1.16:025:58New Moon17Tue
18Wed1:5217.52:0517.08:03-0.78:15-0.45:596:00New Moon18Wed
19Thu2:2417.32:4116.38:39-0.58:470.55:566:02Waxing Crescent19Thu
20Fri2:5516.83:1715.39:150.09:181.65:546:04Waxing Crescent20Fri
21Sat3:2616.03:5514.19:530.79:512.85:516:06Waxing Crescent21Sat
22Sun3:5815.14:3712.910:341.610:274.05:486:08Waxing Crescent22Sun
23Mon4:3614.15:2811.711:222.511:125.15:456:11First Quarter23Mon
24Tue5:2413.16:3810.912:253.35:436:13First Quarter24Tue
25Wed6:3212.48:0510.812:166.01:443.55:406:15First Quarter25Wed
26Thu7:5712.39:2311.51:496.33:013.15:376:17First Quarter26Thu
27Fri9:1412.910:1712.63:165.74:012.25:356:19Waxing Gibbous27Fri
28Sat10:1313.910:5913.94:174.54:471.25:326:21Waxing Gibbous28Sat
29Sun11:0115.111:3615.25:033.15:270.25:296:23Waxing Gibbous29Sun
30Mon11:4516.25:441.66:05-0.65:266:25Full Moon30Mon
31Tue12:1216.512:2617.06:230.16:41-1.15:246:27Full 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 4:12 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 neap phase. Tonight's moon is 42% 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 Third Quarter (42% 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