Plus 1 the "Trick" is leaving them open in a safe place, I leave mine overnight inside a drawer I have set up just for that reason, the next day it gets put in it's storage spot..
I live in slightly more humid Idaho and I still have no issues with this system
ps: To the op I just noted you have wood scales also, so this system is pretty much required for your razor..
To check wood scales for moisture absorption, simply take a wet finger and touch the side of the scale did you leave a wet spot ??? if so then you have to be extra careful with that razor... Renaissance Wax is your new BFF get some and use it in and out, re-do the Ren Wax about every 6 months, and life will be easy, using it on the steel is not bad either...