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?
Thu 5 NovLW 02:20 (0.6 m) HW 09:35 (3.2 m) LW 14:47 (0.8 m) HW 21:21 (3.4 m)—
Fri 6 NovLW 03:13 (0.4 m) HW 10:21 (3.3 m) LW 15:37 (0.6 m) HW 22:13 (3.5 m)—
Sat 7 NovLW 03:57 (0.4 m) HW 11:02 (3.4 m) LW 16:21 (0.4 m) HW 22:59 (3.6 m)—
Sun 8 NovLW 04:36 (0.4 m) HW 11:39 (3.5 m) LW 17:00 (0.4 m) HW 23:41 (3.5 m)—
Mon 9 NovLW 05:12 (0.4 m) HW 12:13 (3.5 m) LW 17:36 (0.4 m)—
Tue 10 NovHW 00:19 (3.5 m) LW 05:44 (0.5 m) HW 12:45 (3.5 m) LW 18:09 (0.4 m)—
Wed 11 NovHW 00:55 (3.5 m) LW 06:16 (0.6 m) HW 13:17 (3.6 m) LW 18:41 (0.5 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.