For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Inner Dowsing Light tide times and boat scrubbing days

Inner Dowsing Light is a UK Hydrographic Office tide station in England at 53.317°, 0.583°. 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.

5 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: Fri 11 Sept, Sat 12 Sept, Sun 13 Sept, Mon 14 Sept, Tue 15 Sept.

Next 7 days of tidal events at Inner Dowsing Light (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Fri 11 SeptHW 06:36 (6.6 m) LW 13:24 (0.6 m) HW 19:21 (6.5 m)✅ Yes
Sat 12 SeptLW 01:26 (1.3 m) HW 07:14 (6.8 m) LW 14:02 (0.6 m) HW 19:56 (6.5 m)✅ Yes
Sun 13 SeptLW 02:01 (1.2 m) HW 07:50 (6.8 m) LW 14:37 (0.8 m) HW 20:28 (6.4 m)✅ Yes
Mon 14 SeptLW 02:32 (1.3 m) HW 08:23 (6.7 m) LW 15:07 (1.0 m) HW 20:57 (6.3 m)✅ Yes
Tue 15 SeptLW 03:01 (1.4 m) HW 08:56 (6.4 m) LW 15:34 (1.4 m) HW 21:25 (6.0 m)✅ Yes
Wed 16 SeptLW 03:31 (1.7 m) HW 09:30 (6.1 m) LW 16:00 (1.8 m) HW 21:54 (5.8 m)
Thu 17 SeptLW 04:04 (2.0 m) HW 10:08 (5.7 m) LW 16:30 (2.2 m) HW 22:26 (5.5 m)

Open the Inner Dowsing Light monthly calendar

Planning a scrub at Inner Dowsing Light

  • 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.