For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Pierowall tide times and boat scrubbing days

Pierowall is a UK Hydrographic Office tide station in Scotland at 59.317°, -2.983°. 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 Pierowall (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Fri 11 SeptLW 04:14 (0.2 m) HW 10:34 (3.7 m) LW 16:18 (0.7 m) HW 22:41 (4.0 m)
Sat 12 SeptLW 04:50 (0.2 m) HW 11:11 (3.7 m) LW 16:53 (0.6 m) HW 23:19 (4.0 m)
Sun 13 SeptLW 05:25 (0.2 m) HW 11:45 (3.6 m) LW 17:27 (0.6 m) HW 23:56 (3.9 m)
Mon 14 SeptLW 05:58 (0.4 m) HW 12:18 (3.5 m) LW 18:00 (0.7 m)
Tue 15 SeptHW 00:31 (3.7 m) LW 06:30 (0.7 m) HW 12:50 (3.3 m) LW 18:32 (0.9 m)
Wed 16 SeptHW 01:07 (3.4 m) LW 07:00 (0.9 m) HW 13:23 (3.2 m) LW 19:06 (1.1 m)
Thu 17 SeptHW 01:44 (3.1 m) LW 07:31 (1.2 m) HW 13:59 (3.0 m) LW 19:44 (1.3 m)

Open the Pierowall monthly calendar

Planning a scrub at Pierowall

  • 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.