Rockall tide times and boat scrubbing days
Rockall is a UK Hydrographic Office tide station in Scotland at 57.600°, -13.683°. 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.
5 mornings in the next 7 days have a high water between 06:30 and 09:00, the ideal window to put a boat on the scrubbing grid or posts: Fri 11 Sept, Sat 12 Sept, Sun 13 Sept, Mon 14 Sept, Tue 15 Sept.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Fri 11 Sept | HW 06:50 (3.0 m) LW 12:54 (0.5 m) HW 18:58 (3.3 m) | ✅ Yes |
| Sat 12 Sept | LW 01:26 (0.4 m) HW 07:23 (3.0 m) LW 13:30 (0.5 m) HW 19:31 (3.3 m) | ✅ Yes |
| Sun 13 Sept | LW 02:01 (0.4 m) HW 07:55 (3.0 m) LW 14:05 (0.5 m) HW 20:03 (3.1 m) | ✅ Yes |
| Mon 14 Sept | LW 02:34 (0.5 m) HW 08:26 (2.9 m) LW 14:40 (0.6 m) HW 20:35 (2.9 m) | ✅ Yes |
| Tue 15 Sept | LW 03:06 (0.6 m) HW 08:57 (2.8 m) LW 15:14 (0.7 m) HW 21:07 (2.7 m) | ✅ Yes |
| Wed 16 Sept | LW 03:38 (0.7 m) HW 09:31 (2.6 m) LW 15:50 (0.8 m) HW 21:41 (2.4 m) | — |
| Thu 17 Sept | LW 04:12 (0.9 m) HW 10:10 (2.4 m) LW 16:28 (1.0 m) HW 22:25 (2.2 m) | — |
Open the Rockall monthly calendar
Planning a scrub at Rockall
- 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.