Heights in feet above Mean Lower Low Water (MLLW). Dots are NOAA's predicted highs and lows; the line between them is our interpolation. Shaded: night.
| Tide | Time | Height |
|---|---|---|
| High tide | 2:26 AM | 16.58 ft |
| Low tide | 8:13 AM | 1.80 ft |
| High tide | 2:15 PM | 19.28 ft |
| Low tide | 8:57 PM | -2.97 ft |
| Day | High tides | Low tides |
|---|---|---|
| Today Tue, Oct 27 | 2:26 AM 16.6 ft2:15 PM 19.3 ft | 8:13 AM 1.8 ft8:57 PM -3.0 ft |
| Tomorrow Wed, Oct 28 | 3:11 AM 16.3 ft2:55 PM 19.1 ft | 8:53 AM 2.4 ft9:41 PM -2.6 ft |
| Thu, Oct 29 | 3:59 AM 15.6 ft3:39 PM 18.4 ft | 9:36 AM 3.3 ft10:30 PM -1.8 ft |
| Fri, Oct 30 | 4:51 AM 14.7 ft4:29 PM 17.2 ft | 10:26 AM 4.2 ft11:26 PM -0.7 ft |
| Sat, Oct 31 | 5:53 AM 13.8 ft5:29 PM 15.7 ft | 11:26 AM 5.2 ft |
| Sun, Nov 1 | 6:05 AM 13.3 ft5:46 PM 14.4 ft | 12:32 AM 0.4 ft11:46 AM 5.8 ft |
| Mon, Nov 2 | 7:23 AM 13.4 ft7:16 PM 13.6 ft | 12:46 AM 1.3 ft1:23 PM 5.5 ft |
Orange: measured by NOAA's sensor, last 24 hours (6-minute data, preliminary). Dashed: predicted tide, through the next 24 hours. The prediction contains only the astronomical tide; wind, air pressure and river flow move the real water level away from it.
Petersburg is a subordinate station: NOAA computes its tides from Ketchikan with fixed time and height corrections.
On Tuesday, October 27, high tide at Petersburg is at 2:26 AM (16.6 ft) and 2:15 PM (19.3 ft); low tide is at 8:13 AM (1.8 ft) and 8:57 PM (-3.0 ft) (AKDT, heights above MLLW). The table above lists the next 7 days.
The highest predicted tide in the next 12 months is 19.8 ft on December 24, 2026 at 12:47 PM. The largest tides fall a day or two after a full or new moon, especially when the Moon is closest to Earth.
Yes — on 178 days in the next 12 months the low tide drops below 0 ft (MLLW). The lowest is -4.2 ft on July 5, 2027 at 9:01 AM. Minus tides expose the most shoreline, which is why tide-poolers look for them.
Station local time (AKDT at the time this page was built), with daylight saving time applied where the area observes it — the same convention as NOAA's own tide tables.
From NOAA CO-OPS, the U.S. government tide station network (tidesandcurrents.noaa.gov); the predictions are public domain. Petersburg is a subordinate station: NOAA derives its times and heights from the reference station Ketchikan with fixed corrections. The curve between highs and lows is our interpolation. This page is not for navigation.