For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Upnor tide times and boat scrubbing days

Upnor is a UK Hydrographic Office tide station in England at 51.417°, 0.533°. 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 Upnor (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovLW 03:08 (1.5 m) HW 09:24 (5.4 m) LW 16:04 (0.8 m) HW 22:06 (5.6 m)—
Fri 6 NovLW 04:13 (1.3 m) HW 10:22 (5.6 m) LW 17:02 (0.7 m) HW 22:59 (5.8 m)—
Sat 7 NovLW 05:07 (1.1 m) HW 11:11 (5.7 m) LW 17:47 (0.7 m) HW 23:42 (5.8 m)—
Sun 8 NovLW 05:52 (1.0 m) HW 11:53 (5.8 m) LW 18:25 (0.7 m)—
Mon 9 NovHW 00:20 (5.9 m) LW 06:31 (0.9 m) HW 12:31 (5.9 m) LW 18:58 (0.7 m)—
Tue 10 NovHW 00:55 (5.9 m) LW 07:09 (0.8 m) HW 13:08 (5.9 m) LW 19:28 (0.8 m)—
Wed 11 NovHW 01:27 (5.8 m) LW 07:45 (0.8 m) HW 13:43 (5.9 m) LW 19:59 (0.8 m)—

Open the Upnor monthly calendar

Planning a scrub at Upnor

  • 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.