King tides in Massachusetts, 2026

The biggest predicted tide in Massachusetts in 2026 reaches 12.2 ft above MLLW at Amelia Earhart Dam, Mystic River on Tuesday, June 16, at 12:16 AMlocal time. Below are all of the year's king tide windows — the top 1% of predicted highs — for NOAA reference stations along the Massachusettscoast. King tides are perigean spring tides: they arrive when a full or new moon lines up with the moon's closest approach to Earth, and they preview the flooding that sea level rise will make routine. Read how king tides work.

Amelia Earhart Dam, Mystic River

King tides (11.9 ft and above) at NOAA station 8443662. Full year: 2026 tide table.

May 18–19 — peaks 12.1 ft at 1:24 AM
Jun 14 — peaks 12.0 ft at 11:23 PM
Jun 16–17 — peaks 12.2 ft at 12:16 AM
Jul 15 — peaks 11.9 ft at 12:04 AM
Nov 26 — peaks 12.0 ft at 11:56 AM
Dec 25 — peaks 12.0 ft at 11:43 AM

Annisquam, Lobster Cove

King tides (11.1 ft and above) at NOAA station 8441571. Full year: 2026 tide table.

May 18–19 — peaks 11.2 ft at 12:28 AM
Jun 16–17 — peaks 11.3 ft at 12:12 AM
Jul 15 — peaks 11.2 ft at 12:00 AM
Nov 26 — peaks 11.1 ft at 11:56 AM
Dec 25–26 — peaks 11.2 ft at 11:44 AM

Beverly, Beverly Harbor

King tides (11.3 ft and above) at NOAA station 8442417. Full year: 2026 tide table.

May 18–19 — peaks 11.5 ft at 1:22 AM
Jun 16–18 — peaks 11.5 ft at 1:09 AM
Jul 15–16 — peaks 11.4 ft at 12:02 AM
Dec 25 — peaks 11.3 ft at 11:41 AM

BOSTON

King tides (11.8 ft and above) at NOAA station 8443970. Full year: 2026 tide table.

May 16 — peaks 11.8 ft at 11:33 PM
May 18–19 — peaks 12.0 ft at 12:24 AM
Jun 14 — peaks 11.9 ft at 11:12 PM
Jun 16–17 — peaks 12.0 ft at 12:07 AM
Nov 26 — peaks 11.8 ft at 11:49 AM
Dec 25 — peaks 11.8 ft at 11:35 AM

Boston Light

King tides (11.4 ft and above) at NOAA station 8444162. Full year: 2026 tide table.

May 16 — peaks 11.4 ft at 11:33 PM
May 18–19 — peaks 11.5 ft at 12:24 AM
Jun 14 — peaks 11.4 ft at 11:12 PM
Jun 16–17 — peaks 11.5 ft at 12:08 AM
Nov 26 — peaks 11.4 ft at 11:49 AM
Dec 25 — peaks 11.4 ft at 11:36 AM

Brant Rock, Green Harbor River

King tides (11.4 ft and above) at NOAA station 8446009. Full year: 2026 tide table.

May 18–19 — peaks 11.6 ft at 1:27 AM
Jun 16–18 — peaks 11.6 ft at 1:13 AM
Jul 15–16 — peaks 11.4 ft at 12:06 AM
Dec 25 — peaks 11.4 ft at 11:45 AM

Cape Cod Canal, Bourne Bridge

King tides (5.9 ft and above) at NOAA station 8447259. Full year: 2026 tide table.

May 16–17 — peaks 5.9 ft at 11:18 PM
May 19 — peaks 5.9 ft at 12:14 AM
Jun 14–15 — peaks 5.9 ft at 11:02 PM
Nov 26 — peaks 5.9 ft at 10:44 AM
Dec 24–25 — peaks 5.9 ft at 9:34 AM

Cape Cod Canal, Bournedale

King tides (7.9 ft and above) at NOAA station 8447191. Full year: 2026 tide table.

May 18–19 — peaks 8.0 ft at 12:57 AM
Jun 15 — peaks 8.0 ft at 11:48 PM
Jun 17 — peaks 8.0 ft at 12:43 AM
Nov 26 — peaks 7.9 ft at 11:28 AM
Dec 24–26 — peaks 8.0 ft at 11:15 AM

NOAA CO-OPS harmonic predictions, datum MLLW, station local time. Actual water level can run higher with storms, onshore wind, and low pressure — king tide + storm is the flooding combination to watch. Predictions are for planning, not navigation.

Also available: Massachusetts king tides 2027.