For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

PORTSMOUTH tide times and boat scrubbing days

PORTSMOUTH is a UK Hydrographic Office tide station in England at 50.800°, -1.117°. 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.

Next 7 days of tidal events at PORTSMOUTH (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Fri 11 SeptLW 05:21 (0.7 m) HW 12:25 (4.8 m) LW 17:42 (0.8 m)
Sat 12 SeptHW 00:27 (4.7 m) LW 06:01 (0.6 m) HW 13:04 (4.8 m) LW 18:22 (0.7 m)
Sun 13 SeptHW 01:07 (4.7 m) LW 06:40 (0.6 m) HW 13:44 (4.8 m) LW 19:00 (0.8 m)
Mon 14 SeptHW 01:49 (4.6 m) LW 07:17 (0.8 m) HW 14:23 (4.7 m) LW 19:36 (0.9 m)
Tue 15 SeptHW 02:31 (4.5 m) LW 07:51 (1.0 m) HW 14:58 (4.6 m) LW 20:08 (1.1 m)
Wed 16 SeptHW 03:10 (4.4 m) LW 08:22 (1.3 m) HW 15:31 (4.5 m) LW 20:39 (1.4 m)
Thu 17 SeptHW 03:47 (4.3 m) LW 08:53 (1.6 m) HW 16:04 (4.3 m) LW 21:12 (1.6 m)

Open the PORTSMOUTH monthly calendar

Planning a scrub at PORTSMOUTH

  • 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.