For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Bardsey Island tide times and boat scrubbing days

Bardsey Island is a UK Hydrographic Office tide station in Wales at 52.767°, -4.783°. 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.

4 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: Sun 8 Nov, Mon 9 Nov, Tue 10 Nov, Wed 11 Nov.

Next 7 days of tidal events at Bardsey Island (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovHW 04:52 (3.8 m) LW 11:39 (1.3 m) HW 17:03 (4.1 m)—
Fri 6 NovLW 00:12 (1.0 m) HW 05:41 (4.0 m) LW 12:26 (1.2 m) HW 17:52 (4.2 m)—
Sat 7 NovLW 00:54 (0.9 m) HW 06:21 (4.1 m) LW 13:07 (1.0 m) HW 18:34 (4.3 m)—
Sun 8 NovLW 01:31 (0.9 m) HW 06:58 (4.2 m) LW 13:44 (1.0 m) HW 19:13 (4.3 m)✅ Yes
Mon 9 NovLW 02:05 (0.9 m) HW 07:34 (4.3 m) LW 14:19 (0.9 m) HW 19:51 (4.3 m)✅ Yes
Tue 10 NovLW 02:39 (0.9 m) HW 08:09 (4.3 m) LW 14:55 (1.0 m) HW 20:29 (4.2 m)✅ Yes
Wed 11 NovLW 03:12 (1.0 m) HW 08:45 (4.3 m) LW 15:30 (1.0 m) HW 21:06 (4.1 m)✅ Yes

Open the Bardsey Island monthly calendar

Planning a scrub at Bardsey Island

  • 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.