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.

No high water falls between 06:30 and 09:00 in the next 7 days. The monthly calendar shows the next suitable scrubbing mornings.

Next 7 days of tidal events at Port William (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Fri 11 SeptLW 06:48 HW 12:43 (6.5 m) LW 18:57
Sat 12 SeptHW 00:56 (6.7 m) LW 07:24 HW 13:19 (6.5 m) LW 19:32
Sun 13 SeptHW 01:32 (6.7 m) LW 07:58 HW 13:54 (6.4 m) LW 20:03
Mon 14 SeptHW 02:06 (6.6 m) LW 08:28 HW 14:26 (6.3 m) LW 20:34
Tue 15 SeptHW 02:39 (6.3 m) LW 08:55 HW 14:57 (6.1 m) LW 21:02
Wed 16 SeptHW 03:12 (6.1 m) LW 09:23 HW 15:30 (5.9 m) LW 21:33
Thu 17 SeptHW 03:47 (5.7 m) LW 09:51 HW 16:06 (5.6 m) LW 22:07 (1.9 m)

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.