For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Colchester tide times and boat scrubbing days

Colchester is a UK Hydrographic Office tide station in England at 51.883°, 0.933°. 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.

One morning in the next 7 days has a high water between 06:30 and 09:00, the ideal window to put a boat on the scrubbing grid or posts: Thu 5 Nov.

Next 7 days of tidal events at Colchester (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovHW 08:53 (3.6 m) HW 21:30 (3.9 m)✅ Yes
Fri 6 NovHW 09:50 (3.9 m) HW 22:21 (4.1 m)—
Sat 7 NovHW 10:37 (4.1 m) HW 23:04 (4.1 m)—
Sun 8 NovHW 11:18 (4.2 m) HW 23:42 (4.1 m)—
Mon 9 NovHW 11:55 (4.3 m)—
Tue 10 NovHW 00:18 (4.1 m) HW 12:30 (4.3 m)—
Wed 11 NovHW 00:50 (4.1 m) HW 13:03 (4.2 m)—

Open the Colchester monthly calendar

Planning a scrub at Colchester

  • 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.