Caernarfon tide times and boat scrubbing days
Caernarfon is a UK Hydrographic Office tide station in Wales at 53.150°, -4.267°. 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: Thu 5 Nov, Fri 6 Nov, Sat 7 Nov, Sun 8 Nov.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Thu 5 Nov | LW 01:05 (1.3 m) HW 06:58 (4.6 m) LW 13:23 (1.6 m) HW 19:08 (4.9 m) | ✅ Yes |
| Fri 6 Nov | LW 01:59 (1.1 m) HW 07:44 (4.8 m) LW 14:14 (1.4 m) HW 19:54 (5.0 m) | ✅ Yes |
| Sat 7 Nov | LW 02:45 (1.0 m) HW 08:22 (4.9 m) LW 14:58 (1.2 m) HW 20:34 (5.1 m) | ✅ Yes |
| Sun 8 Nov | LW 03:24 (0.9 m) HW 08:57 (5.0 m) LW 15:37 (1.1 m) HW 21:11 (5.1 m) | ✅ Yes |
| Mon 9 Nov | LW 04:01 (1.0 m) HW 09:31 (5.1 m) LW 16:15 (1.0 m) HW 21:47 (5.1 m) | — |
| Tue 10 Nov | LW 04:37 (1.0 m) HW 10:04 (5.1 m) LW 16:53 (1.1 m) HW 22:23 (5.0 m) | — |
| Wed 11 Nov | LW 05:11 (1.2 m) HW 10:38 (5.1 m) LW 17:29 (1.2 m) HW 22:58 (4.9 m) | — |
Open the Caernarfon monthly calendar
Planning a scrub at Caernarfon
- 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.