The best time to elope to Ireland would be the months of April, May, June, and September as they are considered low season, and your preferred elopement location will most likely be much quieter.  If you are set on the months of July and August, and your Ceremony is going to be outdoors be sure you talk to your Planner or your Photographer about the best time for your Ceremony You will also want to think about a fall back plan if the weather does not behave!