For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Porthleven tide times and boat scrubbing days

Porthleven is a UK Hydrographic Office tide station in England at 50.083°, -5.317°. 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: Sun 13 Sept, Mon 14 Sept, Tue 15 Sept, Wed 16 Sept.

Next 7 days of tidal events at Porthleven (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Fri 11 SeptHW 05:34 (5.3 m) LW 12:13 (0.6 m) HW 17:52 (5.7 m)
Sat 12 SeptLW 00:37 (0.5 m) HW 06:14 (5.4 m) LW 12:52 (0.5 m) HW 18:31 (5.7 m)
Sun 13 SeptLW 01:12 (0.5 m) HW 06:53 (5.4 m) LW 13:27 (0.6 m) HW 19:09 (5.6 m)✅ Yes
Mon 14 SeptLW 01:44 (0.7 m) HW 07:27 (5.3 m) LW 14:01 (0.7 m) HW 19:44 (5.4 m)✅ Yes
Tue 15 SeptLW 02:14 (0.9 m) HW 07:59 (5.1 m) LW 14:34 (0.9 m) HW 20:19 (5.1 m)✅ Yes
Wed 16 SeptLW 02:46 (1.2 m) HW 08:31 (4.9 m) LW 15:09 (1.2 m) HW 20:54 (4.8 m)✅ Yes
Thu 17 SeptLW 03:21 (1.5 m) HW 09:06 (4.7 m) LW 15:48 (1.5 m) HW 21:35 (4.4 m)

Open the Porthleven monthly calendar

Planning a scrub at Porthleven

  • 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.