Tenant complains of high humidity

[Tim Harrison]

We have a rental in a tropical area that is naturally humid and making it even more humid, our property is next to a pond. According to online weather resources, the humidity right now is 97% and the average humidity level in this area is 92%. It rains several times a day here--every day.

We have a tenant that complains our rental is too humid and wants us to do something about it because dampness in the home can cause health problems. I'm a little surprised they didn't know it would be humid here--it just seems like common sense given the locale.

Most of the comments here on BP address high humidity inside a unit as a problem that can be solved (by fixing a leak or something), but since high humidity is a result of the natural environment here and not a leak, I don't see how I am supposed to remedy the situation. They are not saying there is a leak but just that the unit is too humid.

I do fear that no matter what we do they will still be unhappy because it will continue to be humid regardless. We want whoever lives in our unit to be happy, but it may not be possible in this instance. 

Appreciate any advice on how to handle this situation.

FYI, they are on a month-to-month lease, so they can leave if they want which would be fine with us.