For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Port William tide times and boat scrubbing days

Port William is a UK Hydrographic Office tide station in Scotland at 54.767°, -4.583°. 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.

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: Thu 5 Nov.

Next 7 days of tidal events at Port William (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovLW 02:38 HW 08:41 (5.7 m) LW 14:57 HW 20:57 (6.0 m)✅ Yes
Fri 6 NovLW 03:30 HW 09:32 (5.9 m) LW 15:46 HW 21:45 (6.1 m)—
Sat 7 NovLW 04:15 HW 10:13 (6.1 m) LW 16:28 HW 22:27 (6.3 m)—
Sun 8 NovLW 04:52 HW 10:50 (6.2 m) LW 17:04 HW 23:05 (6.3 m)—
Mon 9 NovLW 05:25 HW 11:24 (6.3 m) LW 17:38 HW 23:40 (6.3 m)—
Tue 10 NovLW 05:54 HW 11:57 (6.3 m) LW 18:08—
Wed 11 NovHW 00:15 (6.2 m) LW 06:23 HW 12:29 (6.3 m) LW 18:39—

Open the Port William monthly calendar

Planning a scrub at Port William

  • 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.