Nasty, before you do anything, calibrate your hygrometer to make sure your readings are right. Do a search on google on this, lots of cigar sites telling you how to do it with damp salt or a damp towel. In summary, get a bottle cap, put in salt, a few drops of water until it's damp but not wet, put it together with your hygrometer into a ziplock bag, seal, leave it for 8 hours, and it should show 75% RH.
Once you know your hygrometer's not screwy, then you figure out why your RH is so high. The target RH for photographic equipment should be between 40-50% ... mine hovers around 45%. For cigars it's another story
And my analog hygrometer (Toyo Living) is spot on, 2 years after I bought it ... never needed to be recalibrated.
Note: don't let the briny stuff touch your hygrometer, you don't want it to be corroded ! Use a *large* ziplock bag, or a transparent airtight container (so you can see the hygrometer reading without opening).