The Calendar Tide Curve Explained –
The tide curve on the calendar will provide you with a quick indicator of the tide in Pwllheli. In September you will note that the tide curve is at its highest on Monday 13th, this shows that the spring tide is on that day.
High tide on springs in Pwllheli is always about 1000hrs BST (+/- 45minites) and then progresses approximately 50 minutes every day so as a rough guide high water on say 15th will be at 1200hrs +/- 1hour and approx 0800 on the 11th.