Outer Westmark Knock tide times and boat scrubbing days
Outer Westmark Knock is a UK Hydrographic Office tide station in England at 52.883°, 0.217°. 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: Wed 11 Nov.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Thu 5 Nov | HW 02:31 (6.0 m) LW 09:23 (1.1 m) HW 15:32 (6.1 m) LW 21:41 (1.7 m) | — |
| Fri 6 Nov | HW 03:27 (6.3 m) LW 10:18 (0.9 m) HW 16:19 (6.4 m) LW 22:34 (1.4 m) | — |
| Sat 7 Nov | HW 04:16 (6.6 m) LW 11:05 (0.8 m) HW 16:59 (6.6 m) LW 23:21 (1.2 m) | — |
| Sun 8 Nov | HW 05:00 (6.8 m) LW 11:49 (0.8 m) HW 17:33 (6.7 m) | — |
| Mon 9 Nov | LW 00:06 (1.0 m) HW 05:41 (6.8 m) LW 12:29 (0.9 m) HW 18:07 (6.7 m) | — |
| Tue 10 Nov | LW 00:46 (1.0 m) HW 06:21 (6.8 m) LW 13:06 (0.9 m) HW 18:40 (6.8 m) | — |
| Wed 11 Nov | LW 01:24 (1.0 m) HW 06:58 (6.7 m) LW 13:40 (1.1 m) HW 19:10 (6.7 m) | ✅ Yes |
Open the Outer Westmark Knock monthly calendar
Planning a scrub at Outer Westmark Knock
- 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.