Port Dinorwic tide times and boat scrubbing days
Port Dinorwic is a UK Hydrographic Office tide station in Wales at 53.183°, -4.217°. 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.
3 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: Thu 5 Nov, Fri 6 Nov, Sat 7 Nov.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Thu 5 Nov | LW 01:14 (1.4 m) HW 07:05 (5.0 m) LW 13:32 (1.7 m) HW 19:15 (5.3 m) | ✅ Yes |
| Fri 6 Nov | LW 02:09 (1.3 m) HW 07:52 (5.2 m) LW 14:24 (1.5 m) HW 20:03 (5.4 m) | ✅ Yes |
| Sat 7 Nov | LW 02:56 (1.2 m) HW 08:31 (5.3 m) LW 15:10 (1.4 m) HW 20:44 (5.5 m) | ✅ Yes |
| Sun 8 Nov | LW 03:36 (1.1 m) HW 09:07 (5.4 m) LW 15:50 (1.3 m) HW 21:22 (5.5 m) | — |
| Mon 9 Nov | LW 04:14 (1.1 m) HW 09:42 (5.5 m) LW 16:29 (1.2 m) HW 21:59 (5.5 m) | — |
| Tue 10 Nov | LW 04:51 (1.2 m) HW 10:16 (5.5 m) LW 17:08 (1.3 m) HW 22:36 (5.4 m) | — |
| Wed 11 Nov | LW 05:26 (1.3 m) HW 10:51 (5.5 m) LW 17:43 (1.4 m) HW 23:12 (5.3 m) | — |
Open the Port Dinorwic monthly calendar
Planning a scrub at Port Dinorwic
- 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.