Travel into Spain crossing pyrenees in November

We've been over-wintering in  Spain for the last few years leaving our home in France in December  and have always travelled via San Sebastian/Pamplona/Zaragoza or Perpignan/Barcelona. This year we are leaving mid-November and are thinking of crossing the Pyrenees.  Has anyone stayed on a site at or near St Lary-Soulan in France and travelled via the Bielsa Tunnel at that time of the year.  What are the road conditions like -  are there likely to be problems ?