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 |
|---|---|---|
| Low tide | 5:41 AM | -0.12 ft |
| High tide | 11:44 AM | 12.79 ft |
| Low tide | 6:17 PM | -1.39 ft |
| Day | High tides | Low tides |
|---|---|---|
| Today Tue, Oct 27 | 11:44 AM 12.8 ft | 5:41 AM -0.1 ft6:17 PM -1.4 ft |
| Tomorrow Wed, Oct 28 | 12:23 AM 11.3 ft12:31 PM 12.9 ft | 6:27 AM -0.1 ft7:06 PM -1.4 ft |
| Thu, Oct 29 | 1:12 AM 11.2 ft1:20 PM 12.7 ft | 7:16 AM 0.1 ft7:58 PM -1.1 ft |
| Fri, Oct 30 | 2:05 AM 10.8 ft2:14 PM 12.4 ft | 8:08 AM 0.4 ft8:54 PM -0.7 ft |
| Sat, Oct 31 | 3:03 AM 10.5 ft3:15 PM 11.9 ft | 9:06 AM 0.8 ft9:56 PM -0.3 ft |
| Sun, Nov 1 | 3:08 AM 10.2 ft3:22 PM 11.5 ft | 9:11 AM 1.1 ft10:02 PM 0.1 ft |
| Mon, Nov 2 | 4:16 AM 10.1 ft4:32 PM 11.1 ft | 10:21 AM 1.3 ft11:08 PM 0.3 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.
Prospect Harbor is a subordinate station: NOAA computes its tides from Portland with fixed time and height corrections.
On Tuesday, October 27, high tide at Prospect Harbor is at 11:44 AM (12.8 ft); low tide is at 5:41 AM (-0.1 ft) and 6:17 PM (-1.4 ft) (EDT, heights above MLLW). The table above lists the next 7 days.
The highest predicted tide in the next 12 months is 13.3 ft on December 25, 2026 at 11:00 AM. The largest tides fall a day or two after a full or new moon, especially when the Moon is closest to Earth.
Yes — on 141 days in the next 12 months the low tide drops below 0 ft (MLLW). The lowest is -2.1 ft on January 23, 2027 at 5:23 PM. Minus tides expose the most shoreline, which is why tide-poolers look for them.
Station local time (EDT 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. Prospect Harbor is a subordinate station: NOAA derives its times and heights from the reference station Portland with fixed corrections. The curve between highs and lows is our interpolation. This page is not for navigation.