Tide charts / Maine

Maine tide charts

Every NOAA tide prediction station on the Maine coast that returned high and low waters when this site was built: 22 of them. The table ranks the coast by mean tidal range, because that is the number that decides how much of a beach, a flat or a ramp is uncovered between one high water and the next — and it is not constant along a single state's shoreline.

Stations ranked by mean tidal range

Mean range below is the average height difference between one predicted extreme and the next, computed over the same seven days for every station in the table, beginning Saturday, October 17. It is derived from NOAA's own predicted extremes; it is not a NOAA-published statistic.

NOAA tide prediction stations in Maine, ranked by mean range over the same seven days beginning Saturday, October 17. Heights in feet above mean lower low water.
Station	Mean range, ft	Largest swing, ft	Prediction type	Stored through
Eastport 8410140	14.05	17.48	Reference (harmonic)	2026-10-23
Cutler, Little River 8411060	10.44	13.11	Reference (harmonic)	2026-10-23
Bangor 8414612	9.81	11.69	Reference (harmonic)	2026-10-23
Bar Harbor 8413320	7.97	10.08	Reference (harmonic)	2026-10-23
Prospect Harbor 8412932	7.93	10.1	Subordinate to 8418150	2026-10-23
Southwest Harbor 8413564	7.67	9.69	Subordinate to 8413320	2026-10-23
Belfast 8415191	7.63	9.74	Subordinate to 8413320	2026-10-23
Castine 8414672	7.48	9.54	Subordinate to 8413320	2026-10-23
Bass Harbor 8413651	7.41	9.38	Subordinate to 8413320	2026-10-23
Rockland 8415490	7.36	9.14	Reference (harmonic)	2026-10-23
Stonington, Deer Isle 8414348	7.27	9.18	Subordinate to 8413320	2026-10-23
Vinalhaven, Vinalhaven Island 8414776	6.92	8.77	Subordinate to 8413320	2026-10-23
Portland 8418150	6.9	8.78	Reference (harmonic)	2026-11-30
South Freeport 8417801	6.83	8.69	Subordinate to 8418150	2026-10-23
Wells 8419317	6.69	8.41	From the water level listing	2026-10-23
Boothbay Harbor 8416828	6.69	8.51	Subordinate to 8418150	2026-10-23
New Harbor, Muscongus Bay 8416501	6.69	8.51	Subordinate to 8418150	2026-10-23
Monhegan Island 8416092	6.69	8.51	Subordinate to 8418150	2026-10-23
Pine Point 8418445	6.57	7.93	From the water level listing	2026-10-23
Fort Popham, Hunniwell Point 8417177	6.38	7.92	Reference (harmonic)	2026-10-23
Seavey Island 8419870	6.18	7.73	From the water level listing	2026-11-30
Bath 8417227	5.51	6.69	Reference (harmonic)	2026-10-23

Ranked from the stored predictions described on the methodology page. Stored windows are uneven because the fetch tool used at build time summarised long NOAA responses rather than reproducing them, which the methodology page records; the printable tide chart tool requests any dates you want from NOAA directly.

What the spread in this table means for you

At Eastport the water moves 14.05 ft between extremes on average; at Bath it moves 5.51 ft. That is the same ocean on the same day, and it is why a tide chart for one Maine town is not a tide chart for another one down the coast. Picking the station nearest your spot matters more than any other choice on this site.

The spacing matters too. Successive high waters sit about 12 h 25 min apart, so a tide that falls at a convenient hour this weekend falls roughly fifty minutes later each day and is inconvenient within a week. Each station page carries that station's own measured spacing over its stored window rather than the textbook figure.

Two stations a few miles apart can also differ in timing, not just range, because a subordinate station's predictions are time-and-height offsets applied to a reference station's harmonic predictions. Where a station is subordinate, the table above names the reference station its numbers are derived from, and so does its own page.

Every Maine station, with its own curve

RisingFalling

Seavey Island tide chart Station 8419870 at 43.079723, -70.74111. Mean range 6.18 ft over the week shown. Highest in the stored window 8.347 ft, lowest 0.616 ft.
Wells tide chart Station 8419317 at 43.32, -70.5633. Mean range 6.69 ft over the week shown. Highest in the stored window 8.989 ft, lowest 0.578 ft.
Pine Point tide chart Station 8418445 at 43.545, -70.3333. Mean range 6.57 ft over the week shown. Highest in the stored window 8.695 ft, lowest 0.765 ft.
Portland tide chart Station 8418150 at 43.658054, -70.24416. Mean range 6.9 ft over the week shown. Highest in the stored window 9.376 ft, lowest 0.598 ft.
South Freeport tide chart Station 8417801 at 43.82, -70.1033. Mean range 6.83 ft over the week shown. Highest in the stored window 9.282 ft, lowest 0.592 ft.
Bath tide chart Station 8417227 at 43.925, -69.815. Mean range 5.51 ft over the week shown. Highest in the stored window 7.051 ft, lowest 0.357 ft.
Fort Popham, Hunniwell Point tide chart Station 8417177 at 43.755, -69.785. Mean range 6.38 ft over the week shown. Highest in the stored window 8.595 ft, lowest 0.675 ft.
Boothbay Harbor tide chart Station 8416828 at 43.85, -69.6283. Mean range 6.69 ft over the week shown. Highest in the stored window 9.094 ft, lowest 0.58 ft.
New Harbor, Muscongus Bay tide chart Station 8416501 at 43.875, -69.4917. Mean range 6.69 ft over the week shown. Highest in the stored window 9.094 ft, lowest 0.58 ft.
Monhegan Island tide chart Station 8416092 at 43.765, -69.3217. Mean range 6.69 ft over the week shown. Highest in the stored window 9.094 ft, lowest 0.58 ft.
Rockland tide chart Station 8415490 at 44.105, -69.1017. Mean range 7.36 ft over the week shown. Highest in the stored window 9.928 ft, lowest 0.781 ft.
Belfast tide chart Station 8415191 at 44.4267, -69.005. Mean range 7.63 ft over the week shown. Highest in the stored window 10.45 ft, lowest 0.711 ft.
Vinalhaven, Vinalhaven Island tide chart Station 8414776 at 44.0433, -68.84. Mean range 6.92 ft over the week shown. Highest in the stored window 9.372 ft, lowest 0.607 ft.
Castine tide chart Station 8414672 at 44.3867, -68.7967. Mean range 7.48 ft over the week shown. Highest in the stored window 10.234 ft, lowest 0.69 ft.
Bangor tide chart Station 8414612 at 44.785, -68.7667. Mean range 9.81 ft over the week shown. Highest in the stored window 12.923 ft, lowest 1.235 ft.
Stonington, Deer Isle tide chart Station 8414348 at 44.1533, -68.6617. Mean range 7.27 ft over the week shown. Highest in the stored window 9.803 ft, lowest 0.621 ft.
Bass Harbor tide chart Station 8413651 at 44.2417, -68.3533. Mean range 7.41 ft over the week shown. Highest in the stored window 10.019 ft, lowest 0.642 ft.
Southwest Harbor tide chart Station 8413564 at 44.275, -68.3133. Mean range 7.67 ft over the week shown. Highest in the stored window 10.342 ft, lowest 0.655 ft.
Bar Harbor tide chart Station 8413320 at 44.392193, -68.20428. Mean range 7.97 ft over the week shown. Highest in the stored window 10.773 ft, lowest 0.69 ft.
Prospect Harbor tide chart Station 8412932 at 44.4, -68.0217. Mean range 7.93 ft over the week shown. Highest in the stored window 10.782 ft, lowest 0.687 ft.
Cutler, Little River tide chart Station 8411060 at 44.6567, -67.21. Mean range 10.44 ft over the week shown. Highest in the stored window 13.893 ft, lowest 0.786 ft.
Eastport tide chart Station 8410140 at 44.90461, -66.98289. Mean range 14.05 ft over the week shown. Highest in the stored window 18.512 ft, lowest 1.036 ft.

What these predictions are, and what they are not

Every number on every Maine page here is an astronomical tide prediction from NOAA's CO-OPS predictions product: the tide the sun and moon would produce on their own. Wind, atmospheric pressure, river discharge and storm surge are not in them. A nor'easter can hold the water well above the predicted line for a day; a hard offshore wind can hold it below. Nothing on this site tells you whether a place is safe to walk, swim, anchor or cross.

Times of slack water — when a tidal current stops running — are a different quantity again, predicted from a different NOAA product, and they do not share a clock with high and low water. High tide vs slack tide works through why.

Heights are feet above mean lower low water, the datum NOAA uses for US tide predictions. A predicted height of 1.0 ft does not mean a foot of water under a hull: it means the surface is predicted to sit a foot above chart datum, and the depth anywhere is whatever the chart says plus that number.