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Tides

King tides in Delaware, 2027

The biggest predicted tide in Delaware in 2027 reaches 7.0 ft above MLLW at Mahon River entrance on Monday, August 2, at 10:28 PM local time. Below are all of the year's king tide windows — the top 1% of predicted highs — for NOAA reference stations along the Delawarecoast. 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.

Brandywine Shoal Light

King tides (6.3 ft and above) at NOAA station 8555889. Full year: 2027 tide table.

  • Jul 3–5 — peaks 6.4 ft at 9:58 PM
  • Aug 1–3 — peaks 6.5 ft at 9:43 PM
  • Aug 30 — peaks 6.3 ft at 8:33 PM
  • Oct 1 — peaks 6.4 ft at 10:17 AM

Delaware City

King tides (6.8 ft and above) at NOAA station 8551762. Full year: 2027 tide table.

  • Jul 5 — peaks 6.9 ft at 12:24 AM
  • Aug 1 — peaks 6.9 ft at 11:16 PM
  • Aug 3–4 — peaks 6.9 ft at 12:10 AM
  • Aug 30–31 — peaks 6.9 ft at 11:52 PM
  • Oct 1–2 — peaks 6.9 ft at 12:45 PM

Indian River Inlet (Coast Guard Station)

King tides (3.5 ft and above) at NOAA station 8558690. Full year: 2027 tide table.

  • Jun 4–6 — peaks 3.6 ft at 10:04 PM
  • Jul 3–5 — peaks 3.6 ft at 9:52 PM
  • Aug 1–2 — peaks 3.6 ft at 8:45 PM

LEWES (BREAKWATER HARBOR)

King tides (5.5 ft and above) at NOAA station 8557380. Full year: 2027 tide table.

  • Jun 5 — peaks 5.5 ft at 10:01 PM
  • Jul 3–5 — peaks 5.6 ft at 9:47 PM
  • Aug 1–3 — peaks 5.6 ft at 9:32 PM
  • Oct 1 — peaks 5.5 ft at 10:04 AM

Little Assawoman Bay

King tides (1.4 ft and above) at NOAA station 8559957. Full year: 2027 tide table.

  • Sep 30–4 — peaks 1.4 ft at 1:42 PM
  • Oct 28–30 — peaks 1.4 ft at 11:42 AM

Mahon River entrance

King tides (6.8 ft and above) at NOAA station 8554399. Full year: 2027 tide table.

  • Jun 5 — peaks 6.8 ft at 10:56 PM
  • Jul 4–5 — peaks 6.9 ft at 10:43 PM
  • Aug 1–3 — peaks 7.0 ft at 10:28 PM
  • Aug 30–31 — peaks 6.9 ft at 10:08 PM

REEDY POINT

King tides (6.6 ft and above) at NOAA station 8551910. Full year: 2027 tide table.

  • Jul 5 — peaks 6.6 ft at 12:15 AM
  • Aug 1 — peaks 6.6 ft at 11:08 PM
  • Aug 3–4 — peaks 6.7 ft at 12:02 AM
  • Aug 30–31 — peaks 6.7 ft at 11:44 PM
  • Sep 2 — peaks 6.6 ft at 12:34 AM
  • Oct 1 — peaks 6.6 ft at 12:37 PM

Rosedale Beach, Indian River

King tides (3.7 ft and above) at NOAA station 8558814. Full year: 2027 tide table.

  • Jul 4 — peaks 3.7 ft at 10:43 PM
  • Aug 1–2 — peaks 3.8 ft at 10:24 PM
  • Aug 29–31 — peaks 3.8 ft at 9:11 PM
  • Sep 30–2 — peaks 3.8 ft at 10:47 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: Delaware king tides 2026.