I have the same problem with my summer closet ...I literally have 2 areas a meter wide for hanging work clothes. and when I finished summer, and the purging that went with it, I happily am wearing clothes that hang in just .5 meter. My closet looked soooo empty. But I rotate and reuse to death, usually the same bottoms every week and different toppers or combined differently. It is a fun challenge to get the most out of what I own.
I packed away summer only items now and brought back some spring for the sunny but colder period coming now. When I did, I could tell that there are a few final things that will not go back into my closet next summer...They are on the replace list now. Purging is freeing!