Irish Sea crossing, Tuesday - the top end of gale force SW winds & rain.
Probably a tad 'bumpy', so best stock up with some Stugeron/Cinnarizine if you are in any way troubled by motion sickness.
Gales should clear mid Wednesday, but things are likely to remain unsettled for the rest of the week. Coming from Kerry, you must have tried & tested wet gear - you'll be needing it.
Whatever, have a good trip & don't get snared by the genius new 20mph plan . The Welsh are well accustomed to bikers/walkers/cyclists arriving looking like drowned rats.