Don't give up on the weather yet. Friday and Saturday wind and rain - Sunday 'a better day'?
John assures me the route is on well known paths, most of which have been used by most of us. The NT path out of Beddgelert, to the look out point, then along Cwm Bychan achieving the highest point Craig Y Llan, the descent a bit awkward after rain!! Should the weather be worse than expected there are plenty of easier alternative routes to undertake. Best of all there is a multi choice of watering places in Beddgelert following the walk.
However the ice cream shop will be closed!!