For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Arrochar tide times and boat scrubbing days

Arrochar is a UK Hydrographic Office tide station in Scotland at 56.200°, -4.750°. 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 Arrochar (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Fri 11 SeptLW 06:25 (-0.0 m) HW 13:39 (3.3 m) LW 18:44 (0.2 m)
Sat 12 SeptHW 01:33 (3.7 m) LW 07:02 (-0.0 m) HW 14:17 (3.3 m) LW 19:23 (0.2 m)
Sun 13 SeptHW 02:13 (3.7 m) LW 07:36 (0.0 m) HW 14:52 (3.3 m) LW 19:58 (0.2 m)
Mon 14 SeptHW 02:50 (3.7 m) LW 08:09 (0.2 m) HW 15:23 (3.3 m) LW 20:33 (0.3 m)
Tue 15 SeptHW 03:24 (3.6 m) LW 08:43 (0.3 m) HW 15:53 (3.3 m) LW 21:08 (0.3 m)
Wed 16 SeptHW 03:58 (3.5 m) LW 09:19 (0.4 m) HW 16:26 (3.3 m) LW 21:47 (0.5 m)
Thu 17 SeptHW 04:33 (3.4 m) LW 09:58 (0.6 m) HW 17:01 (3.2 m) LW 22:29 (0.6 m)

Open the Arrochar monthly calendar

Planning a scrub at Arrochar

  • 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.