For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Trwyn Dinmor tide times and boat scrubbing days

Trwyn Dinmor is a UK Hydrographic Office tide station in Wales at 53.317°, -4.050°. 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: Thu 5 Nov, Fri 6 Nov.

Next 7 days of tidal events at Trwyn Dinmor (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovLW 01:44 (1.7 m) HW 07:45 (6.6 m) LW 14:01 (2.1 m) HW 19:55 (7.1 m)✅ Yes
Fri 6 NovLW 02:37 (1.5 m) HW 08:32 (6.9 m) LW 14:51 (1.8 m) HW 20:43 (7.3 m)✅ Yes
Sat 7 NovLW 03:22 (1.4 m) HW 09:11 (7.1 m) LW 15:35 (1.6 m) HW 21:24 (7.4 m)—
Sun 8 NovLW 04:00 (1.3 m) HW 09:47 (7.2 m) LW 16:14 (1.5 m) HW 22:02 (7.4 m)—
Mon 9 NovLW 04:37 (1.3 m) HW 10:22 (7.4 m) LW 16:51 (1.4 m) HW 22:39 (7.3 m)—
Tue 10 NovLW 05:12 (1.4 m) HW 10:56 (7.4 m) LW 17:29 (1.5 m) HW 23:16 (7.2 m)—
Wed 11 NovLW 05:46 (1.6 m) HW 11:31 (7.3 m) LW 18:04 (1.6 m) HW 23:52 (7.0 m)—

Open the Trwyn Dinmor monthly calendar

Planning a scrub at Trwyn Dinmor

  • 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.