No weather hasn't stopped me at all this summer so far, with the exception of last week where my instructor felt the winds were too much for me to do circuits in.
Assuming you can acquire your PPL in the minimum 45 hours, that will cost €9000. Add on the extras such as Class 2 medical, license application etc and you're looking at €9,500.
Getting your PPL in the U.S will cost about €6000, add on flights, accommodation, and all the other costs and you're not far off what it would cost in Ireland. Weston is busy enough by itself, and it's wedged in between Dublin and Casemont so it's good experience or so I'm told