Steep Holm tide times and boat scrubbing days
Steep Holm is a UK Hydrographic Office tide station in Wales at 51.333°, -3.100°. 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.
2 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.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Fri 11 Sept | LW 01:55 (0.2 m) HW 07:51 (11.8 m) LW 14:14 (0.2 m) HW 20:08 (12.2 m) | ✅ Yes |
| Sat 12 Sept | LW 02:42 (-0.0 m) HW 08:32 (12.0 m) LW 14:59 (0.0 m) HW 20:48 (12.2 m) | ✅ Yes |
| Sun 13 Sept | LW 03:23 (0.1 m) HW 09:10 (11.9 m) LW 15:38 (0.2 m) HW 21:24 (12.0 m) | — |
| Mon 14 Sept | LW 03:58 (0.5 m) HW 09:43 (11.6 m) LW 16:09 (0.8 m) HW 21:55 (11.5 m) | — |
| Tue 15 Sept | LW 04:23 (1.1 m) HW 10:11 (11.1 m) LW 16:28 (1.4 m) HW 22:22 (11.0 m) | — |
| Wed 16 Sept | LW 04:34 (1.7 m) HW 10:35 (10.6 m) LW 16:40 (1.8 m) HW 22:45 (10.4 m) | — |
| Thu 17 Sept | LW 04:46 (2.0 m) HW 10:58 (10.0 m) LW 16:58 (2.2 m) HW 23:10 (9.7 m) | — |
Open the Steep Holm monthly calendar
Planning a scrub at Steep Holm
- 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.