For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Roa Island tide times and boat scrubbing days

Roa Island is a UK Hydrographic Office tide station in England at 54.067°, -3.167°. 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.

One morning in the next 7 days has a high water between 06:30 and 09:00, the ideal window to put a boat on the scrubbing grid or posts: Thu 5 Nov.

Next 7 days of tidal events at Roa Island (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovLW 02:35 (1.9 m) HW 08:17 (8.0 m) LW 14:53 (2.3 m) HW 20:36 (8.4 m)✅ Yes
Fri 6 NovLW 03:28 (1.5 m) HW 09:07 (8.4 m) LW 15:43 (1.9 m) HW 21:24 (8.7 m)—
Sat 7 NovLW 04:13 (1.3 m) HW 09:50 (8.7 m) LW 16:26 (1.6 m) HW 22:06 (8.9 m)—
Sun 8 NovLW 04:52 (1.3 m) HW 10:28 (8.9 m) LW 17:05 (1.5 m) HW 22:44 (8.9 m)—
Mon 9 NovLW 05:27 (1.3 m) HW 11:03 (8.9 m) LW 17:40 (1.5 m) HW 23:20 (8.9 m)—
Tue 10 NovLW 05:59 (1.5 m) HW 11:35 (8.9 m) LW 18:14 (1.6 m) HW 23:54 (8.7 m)—
Wed 11 NovLW 06:30 (1.6 m) HW 12:08 (8.8 m) LW 18:47 (1.7 m)—

Open the Roa Island monthly calendar

Planning a scrub at Roa Island

  • 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.