I live in Florida, with not only lots of rain, but lots of salt from the Ocean and Gulf, high humidity and heat.
Even so, with some basic care, you can keep your carbon steel blades rust free. In the safe, they are lightly oiled. In the field, they are wiped down with a very lightly oiled cloth. I keep a small piece of oiled cloth in a zip loc bag.
There are several hundred knives, of various sizes and shapes in the house. The only ones that show any ill effects are some French carbon steel kitchen knives. I think they look good with a bit of patina.
