Portnancon tide times and boat scrubbing days
Portnancon is a UK Hydrographic Office tide station in Scotland at 58.500°, -4.700°. 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.
5 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: Sat 7 Nov, Sun 8 Nov, Mon 9 Nov, Tue 10 Nov, Wed 11 Nov.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Thu 5 Nov | HW 05:20 (4.4 m) LW 11:11 (2.0 m) HW 17:23 (4.7 m) LW 23:44 (1.2 m) | — |
| Fri 6 Nov | HW 06:02 (4.5 m) LW 11:54 (1.8 m) HW 18:09 (4.8 m) | — |
| Sat 7 Nov | LW 00:23 (1.1 m) HW 06:38 (4.7 m) LW 12:33 (1.6 m) HW 18:48 (4.9 m) | ✅ Yes |
| Sun 8 Nov | LW 00:59 (1.1 m) HW 07:11 (4.8 m) LW 13:11 (1.4 m) HW 19:24 (5.0 m) | ✅ Yes |
| Mon 9 Nov | LW 01:33 (1.2 m) HW 07:41 (4.9 m) LW 13:48 (1.4 m) HW 19:58 (4.9 m) | ✅ Yes |
| Tue 10 Nov | LW 02:07 (1.3 m) HW 08:11 (4.9 m) LW 14:25 (1.4 m) HW 20:30 (4.8 m) | ✅ Yes |
| Wed 11 Nov | LW 02:41 (1.5 m) HW 08:39 (4.9 m) LW 15:02 (1.4 m) HW 21:01 (4.7 m) | ✅ Yes |
Open the Portnancon monthly calendar
Planning a scrub at Portnancon
- 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.