There is so much you can do when in Bansko. If you like to ski, Bansko has you covered. And if you're more into hiking or river rafting or mountain biking, Bansko has you covered, too! It's simply a perfect place to stay throughout the whole year. (Or maybe not in November...😉 )
Museums and Galleries in Bansko
If you want to check for rain before you start an activity you can look here at the "rain radar":
RegenRadar Bulgarien - WetterOnline
(In German but self-explanatory, don't worry.)