Hi klimb,
Routes up to 6c in the shade: more than enough even for a year’s stay )
You’ll have a huge selection of routes in the shade, especially if you climb between morning and mid-afternoon.
Late October / early November too wet or cold? No – usually conditions are perfect, mild and rather dry (though you never know with the weather, so please don’t hold me to it).
Is it less busy? I’m not sure if you mean May or Oct / Nov on this one, so I’ll answer both: October is by far the busiest month; early November gets busier by the year but it’s still by no means crowded; early May can be quite busy, and late May is decent.
I hope this helps! Katie