Perigee

King tides in New Hampshire, 2027

The biggest predicted tide in New Hampshire in 2027 reaches 11.0 ft above MLLW at Jaffrey Point on Tuesday, July 6, at 12:51 AMlocal time. Below are all of the year's king tide windows — the top 1% of predicted highs — for NOAA reference stations along the New Hampshirecoast. 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.

Atlantic Heights

King tides (9.3 ft and above) at NOAA station 8423635. Full year: 2027 tide table.

  • Jan 22–24 — peaks 9.5 ft at 11:51 AM
  • Jul 5–7 — peaks 9.5 ft at 1:31 AM
  • Aug 3–4 — peaks 9.5 ft at 1:17 AM

Dover Point

King tides (8.0 ft and above) at NOAA station 8421897. Full year: 2027 tide table.

  • Jan 22–24 — peaks 8.1 ft at 12:47 PM
  • Jul 5–7 — peaks 8.1 ft at 2:27 AM
  • Aug 3–4 — peaks 8.1 ft at 2:13 AM

Dover, Cocheco River

King tides (8.5 ft and above) at NOAA station 8420411. Full year: 2027 tide table.

  • Jan 22–24 — peaks 8.7 ft at 12:57 PM
  • Jun 7 — peaks 8.5 ft at 2:50 AM
  • Jul 5–6 — peaks 8.6 ft at 2:36 AM
  • Aug 3–4 — peaks 8.6 ft at 1:30 AM

Fort Point

King tides (10.8 ft and above) at NOAA station 8423898. Full year: 2027 tide table.

  • Jan 22–24 — peaks 11.0 ft at 11:22 AM
  • Jul 5–7 — peaks 11.0 ft at 1:01 AM
  • Aug 2 — peaks 10.9 ft at 11:52 PM
  • Aug 4 — peaks 11.0 ft at 12:47 AM

Gosport Harbor, Isles of Shoals

King tides (10.6 ft and above) at NOAA station 8427031. Full year: 2027 tide table.

  • Jan 22–24 — peaks 10.7 ft at 11:16 AM
  • Jul 5–7 — peaks 10.8 ft at 12:56 AM
  • Aug 2 — peaks 10.8 ft at 11:47 PM
  • Aug 4 — peaks 10.8 ft at 12:42 AM

Hampton Harbor

King tides (10.4 ft and above) at NOAA station 8429489. Full year: 2027 tide table.

  • Jan 22–24 — peaks 10.5 ft at 11:28 AM
  • Jul 5–7 — peaks 10.5 ft at 1:08 AM
  • Aug 2 — peaks 10.5 ft at 11:59 PM
  • Aug 4 — peaks 10.5 ft at 12:54 AM

Jaffrey Point

King tides (10.8 ft and above) at NOAA station 8424601. Full year: 2027 tide table.

  • Jan 22–24 — peaks 11.0 ft at 11:11 AM
  • Jul 4 — peaks 10.9 ft at 11:56 PM
  • Jul 6–7 — peaks 11.0 ft at 12:51 AM
  • Aug 2 — peaks 11.0 ft at 11:42 PM
  • Aug 4 — peaks 11.0 ft at 12:37 AM

Portsmouth

King tides (9.8 ft and above) at NOAA station 8423745. Full year: 2027 tide table.

  • Jan 22–24 — peaks 9.9 ft at 11:36 AM
  • Jul 5–7 — peaks 10.0 ft at 1:16 AM
  • Aug 3–4 — peaks 10.0 ft at 1:02 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: New Hampshire king tides 2026.