For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Boscastle tide times and boat scrubbing days

Boscastle is a UK Hydrographic Office tide station in England at 50.683°, -4.700°. 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.

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 Boscastle (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovHW 02:25 (6.1 m) LW 08:14 (2.1 m) HW 14:50 (6.6 m) LW 20:47 (1.7 m)—
Fri 6 NovHW 03:23 (6.5 m) LW 09:02 (1.7 m) HW 15:44 (6.8 m) LW 21:30 (1.5 m)—
Sat 7 NovHW 04:12 (6.8 m) LW 09:44 (1.5 m) HW 16:31 (7.0 m) LW 22:07 (1.4 m)—
Sun 8 NovHW 04:54 (7.0 m) LW 10:22 (1.4 m) HW 17:13 (7.1 m) LW 22:42 (1.3 m)—
Mon 9 NovHW 05:34 (7.1 m) LW 10:56 (1.3 m) HW 17:52 (7.1 m) LW 23:14 (1.4 m)—
Tue 10 NovHW 06:11 (7.1 m) LW 11:29 (1.4 m) HW 18:30 (7.0 m) LW 23:45 (1.5 m)—
Wed 11 NovHW 06:47 (7.0 m) LW 12:02 (1.5 m) HW 19:02 (6.8 m)✅ Yes

Open the Boscastle monthly calendar

Planning a scrub at Boscastle

  • 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.