Upvote:1
I've done a full-circuit road trip around the island, from Dublin to Waterford, Cork, Dingle, Moher, Galway, Sligo, Giants Causeway, Belfast and back to Dublin. We stayed in hostels and mostly arrived without a booking. We were travelling in September.
Driving was pretty much hassle-free, except when we got hit by a toilet falling off a truck on the highway! Irish humour! Obviously if you're just driving between the main towns the roads are going to be fine.
Given the fickle nature of Irish weather, I'd recommend that you stay as flexible as possible with your travel plans, or at least book accommodation that has free cancellation.