April to July are the driest months, while July and August are the warmest. The best months to hit the mountains are June and July for their combination of higher temperatures and lower wind and rain.
In June the Three Peaks Yacht Race hits Barmouth, while the hardcore put on their fell-running shoes for the Snowdon Race in July, the same month Llangollen holds its International Musical Eisteddfod and Fringe Festival.
September is the big month for events, with Bala's triathlon, Barmouth's arts and walking festivals and Portmeirion's wonderful Festival No 6. Snow starts to fall in the mountains in October and lingers on the paths until May.