I imagine you'll soon hear (a) a forecast that far out is not reliable and (b) weather in a coastal climate can change quickly. I was in Dingle, Ireland in March. The forecast THAT DAY called for rain -- my photos show mostly sunny. That said, rain is always quite possible. I imagine things you can see close up (like the Fairy Pools, castles, distillery etc) are better saved for rainy days. And hope for clear days when viewing vistas. If it's at all clear, change your plans accordingly and proceed at once! I'll be in Skye June 17-18. Here's to sunny days!