I did a rough seasonal winds mockup on your world, which can certainly be stretched to get that dry-central Crescentia/ wetter warm east coast Crescentia. Would you like to see my wind hack for your world? It's got guesswork leavened by a dollop of science, but the fun thing (for me anyway) is that such general weather/ climate/ currents schemes keep me from feeling the world isn't arbitrary, just "I said so", but rather there's at least a measure of "this is just how it would happen". Makes it seem more real, less whimsically dictated, you know?