Hi,
I walked the Wicklow Way in May from Marley Park to Clonegal, and yes we even did the Moylisha hill loop, but it was over a gentle 7 days. (it can be walked in a robust 5 or even a Germanic 3 days if you want)
The weather was pretty wet and wild for the most part but even when we got a few hot and muggy patches we weren't bothered by midges. We had expected to be eaten alive and had brought spray but never had to use it. I think that for the first 4 days it was just too windy for the little [censored], we nearly had the heads blown off us on Day two, and after that we probably didn't smell too good!
The two mountain huts on this route are open fronted so if you did get midges that could be a bit of a problem, and though there are fire pits in front of both hut- I guess that age old dilemma of smokey fire or
hungry midges would have to be addressed.
Anyway heres my blog of the walk with some photos.
http://nellswicklowway.blogspot.com/ [nofollow]Bonne route
Nell