Put them on a 5 day hold immediately!
i am going to Paus in January. If you like museums, there’s a ton to do even in inclement weather, even in the evenings (often the best time to go to the Louvre, Orsay)
also depends on your tolerance for weather. I find it’s a question of bringing the right clothes. The new hi tech stuff is very lightweight and very warm. I’d also bring a full length lightweight raincoat that can fit over another coat.