For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Machrihanish tide times and boat scrubbing days

Machrihanish is a UK Hydrographic Office tide station in Scotland at 55.417°, -5.750°. 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 Machrihanish (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Fri 11 SeptHW 02:41 LW 08:42 HW 14:47 LW 21:35
Sat 12 SeptHW 03:18 LW 09:35 HW 15:27 LW 22:20
Sun 13 SeptHW 03:56 LW 10:23 HW 16:05 LW 22:43
Mon 14 SeptHW 04:23 LW 10:47 HW 16:28 LW 23:05
Tue 15 SeptHW 04:43 LW 11:11 HW 16:49 LW 23:28
Wed 16 SeptHW 05:04 LW 11:35 HW 17:10 LW 23:55
Thu 17 SeptHW 05:29 LW 12:03 HW 17:32
Fri 18 SeptLW 00:27

Open the Machrihanish monthly calendar

Planning a scrub at Machrihanish

  • 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.