Mumbles tide times and boat scrubbing days
Mumbles is a UK Hydrographic Office tide station in Wales at 51.567°, -3.967°. 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 01:04 (0.9 m) HW 07:14 (9.6 m) LW 13:14 (0.9 m) HW 19:29 (9.9 m) | ✅ Yes |
| Sat 12 Sept | LW 01:41 (0.8 m) HW 07:52 (9.7 m) LW 13:50 (0.8 m) HW 20:06 (9.9 m) | ✅ Yes |
| Sun 13 Sept | LW 02:14 (0.9 m) HW 08:26 (9.6 m) LW 14:23 (0.9 m) HW 20:41 (9.7 m) | ✅ Yes |
| Mon 14 Sept | LW 02:43 (1.1 m) HW 08:59 (9.4 m) LW 14:52 (1.2 m) HW 21:13 (9.4 m) | ✅ Yes |
| Tue 15 Sept | LW 03:10 (1.4 m) HW 09:30 (9.1 m) LW 15:19 (1.6 m) HW 21:43 (9.0 m) | — |
| Wed 16 Sept | LW 03:34 (1.9 m) HW 09:58 (8.7 m) LW 15:45 (2.1 m) HW 22:11 (8.4 m) | — |
| Thu 17 Sept | LW 03:58 (2.4 m) HW 10:26 (8.1 m) LW 16:13 (2.6 m) HW 22:41 (7.8 m) | — |
Open the Mumbles monthly calendar
Planning a scrub at Mumbles
- 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.