For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Skomer Island tide times and boat scrubbing days

Skomer Island is a UK Hydrographic Office tide station in Wales at 51.733°, -5.283°. 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.

One morning in the next 7 days has a high water between 06:30 and 09:00, the ideal window to put a boat on the scrubbing grid or posts: Wed 11 Nov.

Next 7 days of tidal events at Skomer Island (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovHW 02:54 (5.6 m) LW 09:23 (1.9 m) HW 15:17 (6.0 m) LW 21:57 (1.5 m)—
Fri 6 NovHW 03:47 (5.9 m) LW 10:13 (1.5 m) HW 16:06 (6.2 m) LW 22:42 (1.3 m)—
Sat 7 NovHW 04:31 (6.2 m) LW 10:56 (1.3 m) HW 16:49 (6.4 m) LW 23:20 (1.2 m)—
Sun 8 NovHW 05:10 (6.3 m) LW 11:35 (1.2 m) HW 17:27 (6.4 m) LW 23:56 (1.1 m)—
Mon 9 NovHW 05:46 (6.4 m) LW 12:10 (1.1 m) HW 18:03 (6.4 m)—
Tue 10 NovLW 00:28 (1.2 m) HW 06:20 (6.4 m) LW 12:44 (1.2 m) HW 18:37 (6.3 m)—
Wed 11 NovLW 01:00 (1.3 m) HW 06:53 (6.4 m) LW 13:17 (1.3 m) HW 19:09 (6.2 m)✅ Yes

Open the Skomer Island monthly calendar

Planning a scrub at Skomer 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.