The further north you go the less playing time (less daylight) and the more likelihood of frost, which could limit your playing time (not just course closed but others wishing to play squeezed into a shorter time frame). On the coast less likelihood of frost.
Also worth investigating is that some, although by all means not all, courses require you to play and carry around with you small a mat to play off in the winter or require ‘fairway’ shots to be played from the edge of the rough.
Some clubs have their onsite dormie accommodation open through the winter. Some have restricted catering.
Atb