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.
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 11 Sept, Sat 12 Sept, Sun 13 Sept, Mon 14 Sept.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Fri 11 Sept | LW 01:20 (0.9 m) HW 06:53 (7.2 m) LW 13:56 (0.2 m) HW 19:39 (7.1 m) | ✅ Yes |
| Sat 12 Sept | LW 02:05 (0.7 m) HW 07:35 (7.4 m) LW 14:40 (0.1 m) HW 20:15 (7.1 m) | ✅ Yes |
| Sun 13 Sept | LW 02:45 (0.7 m) HW 08:13 (7.5 m) LW 15:14 (0.3 m) HW 20:46 (7.0 m) | ✅ Yes |
| Mon 14 Sept | LW 03:17 (0.7 m) HW 08:49 (7.3 m) LW 15:45 (0.5 m) HW 21:16 (6.8 m) | ✅ Yes |
| Tue 15 Sept | LW 03:47 (0.9 m) HW 09:23 (7.0 m) LW 16:11 (0.8 m) HW 21:42 (6.5 m) | — |
| Wed 16 Sept | LW 04:12 (1.1 m) HW 09:54 (6.6 m) LW 16:35 (1.2 m) HW 22:07 (6.2 m) | — |
| Thu 17 Sept | LW 04:38 (1.4 m) HW 10:26 (6.1 m) LW 17:00 (1.6 m) HW 22:36 (5.8 m) | — |
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.