I've no experience in the field, but a suggestion: given the conditions might not be as dry as you'd like, it's worth considering buying a 'stainless' steel (like INOX) blade as opposed to a high carbon one. The latter will rust quickly in humid conditions.

Either that, or you will need to consider wiping a carbon blade over with mineral oil in between shaves.

(Dry territories of course wouldn't have this issue.)