Tide times and heights
High and low water at Holmscar for the week, with the hours you can cross the marina sill.
Times BST (UTC+1). Heights in metres above chart datum. Model values for a fictional port. Not for navigation.
0.5 to 3.0 m. The harbour asks for 0.3 m under the keel over the sill.
Sill passable
Monday 5 October
- HW 01:40 4.27 m
- LW 07:17 1.89 m
- HW 14:13 4.20 m
- LW 19:50 1.84 m
Tuesday 6 October
- HW 02:46 4.42 m
- LW 08:37 1.79 m
- HW 15:16 4.36 m
- LW 21:01 1.70 m
Wednesday 7 October
- HW 03:44 4.65 m
- LW 09:42 1.58 m
- HW 16:11 4.58 m
- LW 22:00 1.48 m
Thursday 8 October
- HW 04:34 4.90 m
- LW 10:34 1.33 m
- HW 16:59 4.80 m
- LW 22:47 1.25 m
Friday 9 October
- HW 05:19 5.13 m
- LW 11:17 1.10 m
- HW 17:42 4.99 m
- LW 23:29 1.04 m
Saturday 10 October
- HW 06:01 5.30 m
- LW 11:56 0.92 m
- HW 18:23 5.13 m
Sunday 11 October
- LW 00:08 0.89 m
- HW 06:41 5.40 m
- LW 12:33 0.81 m
- HW 19:02 5.20 m
Reading the heights
Chart datum is about the level of the lowest tide. Depths on the chart are below it; heights of tide are above it.
depth now = charted depth + height of tide
On the sill: water over the sill = height of tide − 1.9 m. The board at the sill reads this figure directly.
This week
Neap tides on Sun 4 October. Ranges grow each day to spring tides on Mon 12 October, a day after the new moon. Spring low waters fall below 1 m; the sill dries for about five hours around each one.
Weather
Strong south-westerly winds and low pressure can raise the level by 0.2 to 0.3 m. High pressure lowers it.