Whatever number of clothes you want to take, jacket, rain coat, rain proof for your travel bag, preferably waterproof shoes. torch, toilet roll, sanitizer, soap, towel, gloves.
A very warm but light jacket. rain coat for emergencies. 2 pair of thermals. 4-5 pair of warm socks. full sleeve tshirts. 3-4 warm hoodies or sweatshirt/ jumper.