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Tides

King tides in New Hampshire, 2027

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The biggest predicted tide in New Hampshire in 2027 reaches 8.7 ft above MLLW at Dover, Cocheco River on Saturday, January 23, at 12:57 PM local time. Below are the currently available 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.

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

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.