Considering how Sango doesn't like bugs, she'd definitely do like Nadeshiko and go camping in winter.
On a side note, I must say that, seeing cute Sango wear some warm winter clothes and remembering all the beautiful Yamanashi landscapes of Yuru Camp, I just hope that one day we'll get a Precure season that takes place in a mountainous area with a colder climate, it could be maximum comfy.