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.
No high water falls between 06:30 and 09:00 in the next 7 days. The monthly calendar shows the next suitable scrubbing mornings.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Fri 11 Sept | LW 05:30 (0.6 m) HW 10:58 (5.6 m) LW 17:39 (0.8 m) HW 23:09 (6.0 m) | — |
| Sat 12 Sept | LW 06:10 (0.6 m) HW 11:35 (5.6 m) LW 18:19 (0.8 m) HW 23:48 (5.9 m) | — |
| Sun 13 Sept | LW 06:46 (0.6 m) HW 12:12 (5.6 m) LW 18:53 (0.8 m) | — |
| Mon 14 Sept | HW 00:26 (5.8 m) LW 07:18 (0.8 m) HW 12:47 (5.5 m) LW 19:26 (1.0 m) | — |
| Tue 15 Sept | HW 01:02 (5.6 m) LW 07:51 (1.1 m) HW 13:20 (5.3 m) LW 20:00 (1.3 m) | — |
| Wed 16 Sept | HW 01:36 (5.3 m) LW 08:23 (1.4 m) HW 13:54 (5.1 m) LW 20:36 (1.6 m) | — |
| Thu 17 Sept | HW 02:12 (4.9 m) LW 08:57 (1.7 m) HW 14:30 (4.8 m) LW 21:15 (1.9 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.