Llanddwyn Island tide times and boat scrubbing days
Llanddwyn Island is a UK Hydrographic Office tide station in Wales at 53.133°, -4.417°. 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.
4 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 6 Nov, Sat 7 Nov, Sun 8 Nov, Mon 9 Nov.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Thu 5 Nov | LW 00:40 (1.3 m) HW 06:28 (4.4 m) LW 12:57 (1.6 m) HW 18:37 (4.7 m) | — |
| Fri 6 Nov | LW 01:30 (1.2 m) HW 07:11 (4.6 m) LW 13:43 (1.4 m) HW 19:21 (4.8 m) | ✅ Yes |
| Sat 7 Nov | LW 02:11 (1.1 m) HW 07:47 (4.7 m) LW 14:24 (1.3 m) HW 19:58 (4.9 m) | ✅ Yes |
| Sun 8 Nov | LW 02:47 (1.0 m) HW 08:20 (4.8 m) LW 15:00 (1.2 m) HW 20:33 (4.9 m) | ✅ Yes |
| Mon 9 Nov | LW 03:21 (1.0 m) HW 08:52 (4.8 m) LW 15:35 (1.1 m) HW 21:07 (4.8 m) | ✅ Yes |
| Tue 10 Nov | LW 03:55 (1.1 m) HW 09:23 (4.9 m) LW 16:10 (1.2 m) HW 21:41 (4.7 m) | — |
| Wed 11 Nov | LW 04:27 (1.2 m) HW 09:55 (4.8 m) LW 16:45 (1.3 m) HW 22:14 (4.6 m) | — |
Open the Llanddwyn Island monthly calendar
Planning a scrub at Llanddwyn 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.