Perigee

King tides in Pennsylvania, 2027

The biggest predicted tide in Pennsylvania in 2027 reaches 9.3 ft above MLLW at Newbold, Pa. on Wednesday, May 19, at 2:23 AMlocal time. Below are all of the year's king tide windows — the top 1% of predicted highs — for NOAA reference stations along the Pennsylvaniacoast. 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.

Bridesburg, Philadelphia, Pa.

King tides (7.6 ft and above) at NOAA station 8546252. Full year: 2027 tide table.

  • Jul 4–5 — peaks 7.7 ft at 3:08 AM
  • Aug 2–3 — peaks 7.7 ft at 2:51 AM
  • Aug 31–1 — peaks 7.6 ft at 2:31 AM
  • Oct 1–2 — peaks 7.6 ft at 3:24 PM

Marcus Hook, Pa.

King tides (7.0 ft and above) at NOAA station 8540433. Full year: 2027 tide table.

  • Jun 5–7 — peaks 7.1 ft at 1:36 AM
  • Jul 4–6 — peaks 7.1 ft at 1:22 AM
  • Aug 2–3 — peaks 7.1 ft at 1:06 AM

Newbold, Pa.

King tides (9.2 ft and above) at NOAA station 8548989. Full year: 2027 tide table.

  • Apr 20–22 — peaks 9.3 ft at 3:31 AM
  • May 18–20 — peaks 9.3 ft at 2:23 AM
  • Oct 1 — peaks 9.2 ft at 4:17 PM
  • Oct 29 — peaks 9.2 ft at 3:07 PM

Philadelphia, Municipal Pier 11, Pa.

King tides (7.6 ft and above) at NOAA station 8545530. Full year: 2027 tide table.

  • Apr 21 — peaks 7.6 ft at 2:35 AM
  • Jul 5–6 — peaks 7.7 ft at 3:01 AM
  • Aug 2–4 — peaks 7.8 ft at 2:43 AM
  • Aug 31–1 — peaks 7.7 ft at 2:23 AM

PHILADELPHIA, US Coast Guard Station, Pa.

King tides (7.3 ft and above) at NOAA station 8545240. Full year: 2027 tide table.

  • May 19 — peaks 7.3 ft at 1:09 AM
  • Jul 4–5 — peaks 7.4 ft at 2:47 AM
  • Aug 2–3 — peaks 7.4 ft at 2:31 AM
  • Aug 31–1 — peaks 7.3 ft at 1:20 AM
  • Oct 1 — peaks 7.3 ft at 3:05 PM

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: Pennsylvania king tides 2026.