Using EasyTide Website Data:
Date: 14th April 2020:
High Water Time: 02:59 / High Water Height: 6.9m
Low Water Time: 10:14 / Low Water Height: 1.9m
Tidal Range = 5m
High Water Time: 15:27 / High Water Height: 6.6m
Low Water Time: 22:36 / Low Water Height: 2.2m
Tidal Range = 4.4m
Tidal info taken from EasyTide - + 1 hour for 'Summer Time' added via website
Using Almanac Data:
Low Water Time: 01:39 / Low Water Height: 1.2m
High Water Time: 08:08 / High Water Height: 3.1m
Tidal Range = 1.9m
Low Water Time: 14:22 / Low Water Height: 1.1m
High Water Time: 20:54 / High Water Height: 3.3m
Tidal Range = 2.2m
+ 1 hour has been added to adjust for 'Summer Time' as 16th September is in a 'non-shaded' area.
Chart Datum (L.A.T.) is found on a chart of the area you're planning on going afloat.
Chart Datum + Tide Height = Depth of Water
Occur approx every 14 days near a full or new moon.
Spring tides are the highest high tides and lowest low tides, where the tidal range is at its largest which also means the tidal flow will be at its strongest..
Occur approx 7 days after springs and around the first and last quarter moon phases.
Neap tides are the lowest high tides and highest low tides, where the tidal range is at it's smallest.
Many (though not all) tide tables will have small symbols showing the moon phases (see adjacent image).
If your tide table does not show the Moon Phases you can still figure out whether it is Spring or Neap tides by looking at and comparing the tidal ranges across a 4 week period on a tide table.
Tidal Range on 16th May = 1.3m (Neap Tide)
Tidal Range on 6th June = 3.7m (Spring Tide)
UT = Universal Time
GMT = Greenwich Mean Time
BST = British Summer Time (i.e. + 1 hour)
Extremely high pressure will make the tide heights less
Extreme low pressure will make the high tides more
A way of estimating the expected water level 'a rule of thumb'
If the Tidal Range was 6m and if LW was at 12:00