For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Porthcawl tide times and boat scrubbing days

Porthcawl is a UK Hydrographic Office tide station in Wales at 51.467°, -3.700°. This page lists the next 7 days of official Admiralty high and low water predictions and flags the mornings when high water falls in the 06:30 to 09:00 scrubbing window. The interactive calendar extends this to a full month with harmonic predictions.

2 mornings in the next 7 days have a high water between 06:30 and 09:00, the ideal window to put a boat on the scrubbing grid or posts: Tue 10 Nov, Wed 11 Nov.

Next 7 days of tidal events at Porthcawl (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovHW 03:05 (8.2 m) LW 09:11 (2.5 m) HW 15:28 (8.8 m) LW 21:44 (2.0 m)—
Fri 6 NovHW 03:59 (8.7 m) LW 10:00 (2.0 m) HW 16:18 (9.2 m) LW 22:28 (1.7 m)—
Sat 7 NovHW 04:43 (9.1 m) LW 10:42 (1.7 m) HW 17:01 (9.4 m) LW 23:06 (1.6 m)—
Sun 8 NovHW 05:23 (9.4 m) LW 11:21 (1.6 m) HW 17:40 (9.5 m) LW 23:41 (1.5 m)—
Mon 9 NovHW 05:59 (9.6 m) LW 11:55 (1.5 m) HW 18:16 (9.5 m)—
Tue 10 NovLW 00:13 (1.6 m) HW 06:33 (9.6 m) LW 12:29 (1.6 m) HW 18:51 (9.4 m)✅ Yes
Wed 11 NovLW 00:45 (1.7 m) HW 07:07 (9.5 m) LW 13:02 (1.8 m) HW 19:23 (9.2 m)✅ Yes

Open the Porthcawl monthly calendar

Planning a scrub at Porthcawl

  • Aim for a high water between 06:30 and 09:00 so the boat dries out through the morning and refloats on the afternoon flood.
  • Spring tides (around new and full moon) give a larger range and more working time on the grid.
  • Check the height of high water against the depth of your grid or posts; neap tides may not float a deep-keeled yacht on.
  • Predictions beyond 7 days are harmonic estimates. Confirm dates against official tide tables before committing a crane or grid booking.