Tide times
http://www.ntslf.org/tides/tidepred?port=Llandudno
This one is already adjusted for BST v GMT ( thanks Jack! )
http://www.tides4fishing.com/uk
Weather
Sea Fishing Weather Forecasts and live feeds
http://xcweather.co.uk
You can filter this by location and the information required.
Here is a live feed from the Hilbre Island bouy, this tells you what a particular wind speed equates to.
http://cobs.noc.ac.uk/cobs/met/hilbre/
Willyweather ( wind/tide/swell weather and more, around the UK)
https://www.willyweather.co.uk/
Always check for British Summer Time settings and consider any effect from local conditions, sand banks, gullies etc.