For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Iona tide times and boat scrubbing days

Iona is a UK Hydrographic Office tide station in Scotland at 56.333°, -6.383°. 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 Iona (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovHW 03:01 (3.3 m) LW 08:51 (1.0 m) HW 15:08 (3.6 m) LW 21:49 (1.1 m)—
Fri 6 NovHW 03:38 (3.5 m) LW 09:38 (0.9 m) HW 15:44 (3.8 m) LW 22:21 (1.0 m)—
Sat 7 NovHW 04:08 (3.7 m) LW 10:17 (0.8 m) HW 16:15 (3.9 m) LW 22:50 (0.9 m)—
Sun 8 NovHW 04:39 (3.8 m) LW 10:54 (0.8 m) HW 16:47 (3.9 m) LW 23:16 (0.9 m)—
Mon 9 NovHW 05:10 (3.9 m) LW 11:26 (0.8 m) HW 17:18 (4.0 m) LW 23:45 (0.9 m)—
Tue 10 NovHW 05:43 (4.0 m) LW 11:58 (0.9 m) HW 17:50 (3.9 m)—
Wed 11 NovLW 00:13 (0.9 m) HW 06:16 (4.0 m) LW 12:28 (1.0 m) HW 18:23 (3.9 m)—

Open the Iona monthly calendar

Planning a scrub at Iona

  • 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.