Port Isaac tide times and boat scrubbing days
Port Isaac is a UK Hydrographic Office tide station in England at 50.600°, -4.833°. 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 12 Sept, Sun 13 Sept, Mon 14 Sept, Tue 15 Sept, Wed 16 Sept.
| Day | Tidal events | Scrubbing morning? |
|---|---|---|
| Fri 11 Sept | HW 06:08 (7.6 m) LW 12:22 (0.7 m) HW 18:25 (7.9 m) | — |
| Sat 12 Sept | LW 00:48 (0.6 m) HW 06:46 (7.7 m) LW 12:59 (0.7 m) HW 19:02 (7.9 m) | ✅ Yes |
| Sun 13 Sept | LW 01:23 (0.7 m) HW 07:21 (7.6 m) LW 13:34 (0.8 m) HW 19:37 (7.7 m) | ✅ Yes |
| Mon 14 Sept | LW 01:55 (0.9 m) HW 07:54 (7.5 m) LW 14:06 (1.0 m) HW 20:09 (7.5 m) | ✅ Yes |
| Tue 15 Sept | LW 02:25 (1.2 m) HW 08:25 (7.2 m) LW 14:37 (1.3 m) HW 20:40 (7.1 m) | ✅ Yes |
| Wed 16 Sept | LW 02:54 (1.6 m) HW 08:56 (6.8 m) LW 15:06 (1.7 m) HW 21:11 (6.6 m) | ✅ Yes |
| Thu 17 Sept | LW 03:21 (2.0 m) HW 09:27 (6.4 m) LW 15:37 (2.2 m) HW 21:44 (6.1 m) | — |
Open the Port Isaac monthly calendar
Planning a scrub at Port Isaac
- 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.