Holy Island tide times and boat scrubbing days
Holy Island is a UK Hydrographic Office tide station in England at 55.667°, -1.800°. 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 17 Sept.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Fri 11 Sept | HW 03:19 (5.1 m) LW 09:30 (0.3 m) HW 15:53 (4.9 m) LW 21:39 (0.8 m) | — |
| Sat 12 Sept | HW 03:57 (5.2 m) LW 10:09 (0.3 m) HW 16:28 (4.9 m) LW 22:15 (0.7 m) | — |
| Sun 13 Sept | HW 04:34 (5.2 m) LW 10:44 (0.4 m) HW 17:03 (4.9 m) LW 22:48 (0.8 m) | — |
| Mon 14 Sept | HW 05:10 (5.1 m) LW 11:18 (0.5 m) HW 17:38 (4.7 m) LW 23:21 (0.9 m) | — |
| Tue 15 Sept | HW 05:48 (4.9 m) LW 11:49 (0.8 m) HW 18:12 (4.6 m) LW 23:54 (1.0 m) | — |
| Wed 16 Sept | HW 06:27 (4.6 m) LW 12:20 (1.1 m) HW 18:47 (4.4 m) | — |
| Thu 17 Sept | LW 00:28 (1.2 m) HW 07:10 (4.3 m) LW 12:53 (1.4 m) HW 19:28 (4.1 m) | ✅ Yes |
Open the Holy Island monthly calendar
Planning a scrub at Holy 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.