Plymouth tides today
The Plymouth station is in Plymouth Harbor, at the western corner of Cape Cod Bay, where the bay’s full ten-foot tide reaches the shore.
Shaded: night. Green bands: solunar periods (thick = major, thin = minor). Heights in feet above Mean Lower Low Water, the zero of NOAA charts.
Plymouth, MA · Tuesday, October 13
Tide falling, 4.3 ft now
Low 8:14 PM
0.2 ft · in 2 h 33 min
| High | 1:33 AM | 9.7 ft |
| Low | 7:44 AM | 1.0 ft |
| High | 1:43 PM | 10.6 ft |
| Low | 8:14 PM | 0.2 ft |
Tide coefficient 103 (average), range 10.4 ft
Sunrise 6:53 AM · sunset 6:04 PM
Waxing crescent, 9% lit · fishing day ★★★☆
Solunar: major 1:22 AM–3:22 AM, minor 9:41 AM–10:41 AM, major 1:46 PM–3:46 PM, minor 6:46 PM–7:46 PM
Plymouth tide table, next 7 days
| Day | High tides | Low tides | Coef. | Sun | Moon |
|---|---|---|---|---|---|
| 1:33 AM 9.7 ft · 1:43 PM 10.6 ft | 7:44 AM 1.0 ft · 8:14 PM 0.2 ft | 103 | 6:53 AM–6:04 PM | Waxing crescent ★★★☆ | |
| 2:13 AM 9.4 ft · 2:23 PM 10.3 ft | 8:27 AM 1.4 ft · 8:58 PM 0.6 ft | 97 | 6:54 AM–6:03 PM | Waxing crescent ★★☆☆ | |
| 2:55 AM 9.0 ft · 3:06 PM 10.0 ft | 9:11 AM 1.8 ft · 9:45 PM 0.9 ft | 90 | 6:55 AM–6:01 PM | Waxing crescent ★★☆☆ | |
| 3:41 AM 8.7 ft · 3:54 PM 9.7 ft | 9:59 AM 2.1 ft · 10:34 PM 1.3 ft | 84 | 6:56 AM–5:59 PM | First quarter ★★☆☆ | |
| 4:30 AM 8.4 ft · 4:44 PM 9.3 ft | 10:49 AM 2.4 ft · 11:26 PM 1.6 ft | 78 | 6:57 AM–5:58 PM | First quarter ★★☆☆ | |
| 5:22 AM 8.2 ft · 5:38 PM 9.1 ft | 11:43 AM 2.6 ft | 65 | 6:59 AM–5:56 PM | First quarter ★★☆☆ | |
| 6:18 AM 8.1 ft · 6:36 PM 9.0 ft | 12:21 AM 1.8 ft · 12:40 PM 2.6 ft | 72 | 7:00 AM–5:55 PM | First quarter ★★☆☆ |
Plan around the tide at Plymouth
No window of 30 minutes or more below 1.0 ft over the next 7 days in daylight. Try a higher level.
A falling tide uncovers sand bars and tide pools first; plan to be back before the water rises past the level you chose. Not for navigation.
Station Plymouth (NOAA 8446493). Predicted astronomical tide: wind, river flow and storms can move the real water by a foot or more. 10.0 ft is the average daily range here.
Published by Radif Partners · How the tides are computed · predictions downloaded October 13, 2026
Tide times for Plymouth come from the National Ocean Service prediction for station 8446493, Plymouth. The tide here is semidiurnal: two highs and two lows of similar height every day, about six hours and a quarter apart, with an average daily range of 10.0 ft. Around the new and full moon the range grows to about 12.2 ft on one day in ten, and at the quarter moons it shrinks to 7.9 ft. Heights are in feet above Mean Lower Low Water, the zero of nautical charts, so a negative number is water below that zero: 139 of the 457 days from October 1, 2026 to December 31, 2027 have one, down to -1.5 ft on January 23, 2027. The highest predicted tide of that period is 12.2 ft on July 6, 2027. Clock times are Eastern Time, daylight saving time included.
A harbor behind a long beach
Plymouth Harbor is enclosed by Plymouth Beach, a barrier spit that runs out from the south shore, and by Duxbury Beach to the north. Inside, the harbor and Duxbury Bay are shallow and drain to wide flats and channels at low water. The average day moves 10.0 ft here, among the biggest ranges in Massachusetts, because Cape Cod Bay as a whole carries a much larger tide than Nantucket Sound south of the Cape.
For anyone mooring or launching in the harbor, that range is the whole story: a channel that floats a boat at mid-tide can be a ribbon of water between sand at the low. Duxbury Harbor, five miles north, has its own reference station and a very similar tide.
Shellfish flats and the long walk
At low tide the flats inside Plymouth Beach and toward Duxbury Bay open wide. They draw clammers and walkers, and they fill quickly once the tide turns because so much ground sits within a foot or two of the low-water line. Sand that looks dry can be cut off by a channel that fills behind you. The lowest predicted low of the period is -1.5 ft, on January 23, 2027.
Same bay, other side
Provincetown, at the far end of Cape Cod Bay, has a tide almost identical in size; Hyannis on the south side of the Cape has about a third of it. The Cape Cod tide comparison puts these stations on one chart. The highest prediction here is 12.2 ft, on July 6, 2027.
Highest and lowest tides at Plymouth, 2026 to 2027
The six highest highs and six lowest lows predicted for Plymouth between October 1, 2026 and December 31, 2027, one per day. The high-water dates are the king tides of this station; the low-water dates are the best days to see the flats, bars and tide pools.
| Highest highs | Time | Height |
|---|---|---|
| July 6, 2027 | 1:17 AM | 12.2 ft |
| December 25, 2026 | 11:50 AM | 12.2 ft |
| November 26, 2026 | 12:05 PM | 12.1 ft |
| August 4, 2027 | 1:01 AM | 12.1 ft |
| December 26, 2026 | 12:43 PM | 12.1 ft |
| November 27, 2026 | 12:57 PM | 12.1 ft |
| Lowest lows | Time | Height |
|---|---|---|
| January 23, 2027 | 6:08 PM | -1.5 ft |
| January 24, 2027 | 6:56 PM | -1.5 ft |
| December 25, 2026 | 6:27 PM | -1.4 ft |
| December 26, 2026 | 7:18 PM | -1.4 ft |
| January 22, 2027 | 5:18 PM | -1.3 ft |
| December 24, 2026 | 5:36 PM | -1.3 ft |
Tidal datums at station 8446493
NOAA's averages over the 1983-2001 epoch, measured from the chart zero (MLLW). Average range of the tide (MN): 9.8 ft; great diurnal range (GT): 10.5 ft.
| Datum | Meaning | Height above MLLW |
|---|---|---|
| MHHW | Mean Higher High Water | 10.5 ft |
| MHW | Mean High Water | 10.1 ft |
| MSL | Mean Sea Level | 5.4 ft |
| MLW | Mean Low Water | 0.3 ft |
| MLLW | Mean Lower Low Water (chart zero) | 0.0 ft |
Other stations nearby
- Provincetown tides: Provincetown, average range 9.9 ft, highest predicted tide 11.6 ft on July 6, 2027
- Hyannis tides: Hyannis Port, average range 3.6 ft, highest predicted tide 4.7 ft on July 5, 2027
- Boston tides: BOSTON, average range 9.9 ft, highest predicted tide 11.8 ft on November 26, 2026
- Chatham tides: Chatham, Stage Harbor, average range 4.3 ft, highest predicted tide 5.5 ft on November 26, 2026
- Gloucester tides: Gloucester Harbor, average range 9.4 ft, highest predicted tide 11.3 ft on July 6, 2027
- Nantucket tides: NANTUCKET, average range 3.5 ft, highest predicted tide 4.4 ft on November 26, 2026