In reply to TimB:
> And if you have the skin for higher altitude granite bouldering
> Targasonne : needs to be dry and sunny (not really on the way though, nearly in the Ariege)
Well it's definitely on the way through ... if you're also planning on climbing in Ariège!
Seriously, if the weather is settled (which is much and possibly most of the time) then climbing in winter in Ariège can be one of the most pleasant experiences, with low-lying, South facing crags getting loads of sun and - importantly - almost no wind whatsoever. I've lost count of the times I've been belaying shirtless in midwinter at places like Génat and Calamès.
If there's a winter storm coming through at the time though, just keep going into Spain