For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Haverfordwest tide times and boat scrubbing days

Haverfordwest is a UK Hydrographic Office tide station in Wales at 51.800°, -4.967°. 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.

3 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: Fri 11 Sept, Sat 12 Sept, Sun 13 Sept.

Next 7 days of tidal events at Haverfordwest (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Fri 11 SeptHW 07:28 (2.3 m) HW 19:46 (2.6 m)✅ Yes
Sat 12 SeptHW 08:08 (2.4 m) HW 20:24 (2.6 m)✅ Yes
Sun 13 SeptHW 08:44 (2.4 m) HW 21:01 (2.5 m)✅ Yes
Mon 14 SeptHW 09:18 (2.2 m) HW 21:33 (2.2 m)
Tue 15 SeptHW 09:48 (1.8 m) HW 22:03 (1.7 m)
Wed 16 SeptHW 10:18 (1.4 m) HW 22:32 (1.2 m)
Thu 17 SeptHW 10:47 (1.0 m) HW 23:03 (0.7 m)

Open the Haverfordwest monthly calendar

Planning a scrub at Haverfordwest

  • 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.