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 | 12:00 AM | 9.91 ft |
| Low tide | 5:56 AM | -0.11 ft |
| High tide | 12:08 PM | 11.12 ft |
| Low tide | 6:32 PM | -1.21 ft |
| Day | High tides | Low tides |
|---|---|---|
| Today Tue, Oct 27 | 12:00 AM 9.9 ft12:08 PM 11.1 ft | 5:56 AM -0.1 ft6:32 PM -1.2 ft |
| Tomorrow Wed, Oct 28 | 12:47 AM 9.9 ft12:55 PM 11.2 ft | 6:42 AM -0.1 ft7:21 PM -1.2 ft |
| Thu, Oct 29 | 1:36 AM 9.7 ft1:44 PM 11.1 ft | 7:31 AM 0.1 ft8:13 PM -1.0 ft |
| Fri, Oct 30 | 2:29 AM 9.4 ft2:38 PM 10.8 ft | 8:23 AM 0.4 ft9:09 PM -0.6 ft |
| Sat, Oct 31 | 3:27 AM 9.1 ft3:39 PM 10.4 ft | 9:21 AM 0.7 ft10:11 PM -0.3 ft |
| Sun, Nov 1 | 3:32 AM 8.9 ft3:46 PM 10.0 ft | 9:26 AM 1.0 ft10:17 PM 0.1 ft |
| Mon, Nov 2 | 4:40 AM 8.8 ft4:56 PM 9.7 ft | 10:36 AM 1.1 ft11:23 PM 0.2 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.
On Tuesday, October 27, high tide at Portland is at 12:00 AM (9.9 ft) and 12:08 PM (11.1 ft); low tide is at 5:56 AM (-0.1 ft) and 6:32 PM (-1.2 ft) (EDT, heights above MLLW). The table above lists the next 7 days.
The highest predicted tide in the next 12 months is 11.6 ft on December 25, 2026 at 11:24 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 -1.8 ft on January 23, 2027 at 5:38 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. The curve between highs and lows is our interpolation. This page is not for navigation.