Porth Dinllaen tide times and boat scrubbing days
Porth Dinllaen is a UK Hydrographic Office tide station in Wales at 52.950°, -4.567°. 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 00:35 (1.2 m) HW 06:19 (4.0 m) LW 12:52 (1.5 m) HW 18:28 (4.3 m) | — |
| Fri 6 Nov | LW 01:25 (1.0 m) HW 07:03 (4.2 m) LW 13:38 (1.3 m) HW 19:13 (4.4 m) | ✅ Yes |
| Sat 7 Nov | LW 02:06 (0.9 m) HW 07:39 (4.3 m) LW 14:19 (1.1 m) HW 19:51 (4.5 m) | ✅ Yes |
| Sun 8 Nov | LW 02:42 (0.8 m) HW 08:13 (4.4 m) LW 14:55 (1.0 m) HW 20:26 (4.5 m) | ✅ Yes |
| Mon 9 Nov | LW 03:16 (0.9 m) HW 08:45 (4.5 m) LW 15:30 (0.9 m) HW 21:01 (4.5 m) | ✅ Yes |
| Tue 10 Nov | LW 03:50 (0.9 m) HW 09:17 (4.5 m) LW 16:05 (1.0 m) HW 21:35 (4.4 m) | — |
| Wed 11 Nov | LW 04:22 (1.1 m) HW 09:50 (4.5 m) LW 16:40 (1.1 m) HW 22:09 (4.3 m) | — |
Open the Porth Dinllaen monthly calendar
Planning a scrub at Porth Dinllaen
- 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.