Welcome to the world of aviation being controlled by the weather, nothing new there.
I've known quite a few people who tried doing their CPL/IR during the Autumn/Winter months and quite obviously it takes many months, just to complete the CPL alone.
It would be best if you plan your training to do your CPL/IR during Spring/Summer during minimum time, but I understand that work commitments/finances/months remaining of ATPL theory to remain valid, etc might not allow one to wait that long.
I know which one I'd choose, but it's luck of the draw sadly.
A mate of mine has only managed to fly 20mins within the last month, that says enough in itself.