I live on a small lake in Florida and have a lot of moisture in my hom

Maybe this will help. https://ietbuildinghealth.com/blog/controlling-humidity-in-florida-homes-year-round/

Dehumidifyer.

I would get a dehumidifer.

Put uncooked rice in them, it will absorb the moisture. For sugar, get sugar savers. And keep your flour in the freezer and take out about an hour before baking or cooking to bring it to room temperature.

Look into portable dehumidifiers too. Maybe keep one in your kitchen and especially in your closets.

I feel that your oversized HVAC is the culprit.

Oversized air conditioners don't run for a long time because they satisfy the cooling load quickly and then shut off. Properly sized air conditioners run longer, so if you want your air conditioner to dehumidify your home as well as cool it, an oversized air conditioner is not the way to go.

When an air conditioner runs, it does two jobs. It lowers the temperature of the air, and it removes moisture from the air. To do the second one, the AC has to run for a while.

As the air passes over the evaporator coil, it encounters a very cold surface. Ideally, when the air passes over that cold surface, the air temperature drops about 20° F. In places where we have higher relative humidity in the the evaporator coil in an air conditioner cools and dehumidifies your home's air. The other important process that happens when the air hits the coil is that the temperature of the coil is below the dew point of the air. As a result, water vapor condenses on the coil.

Water vapor condenses on coils in oversized air conditioners, too, but you have to get enough condensation on the coil for the water to start dripping down into the pan below the coil.

Until the water that condenses actually makes it to the pan and out, you haven't really dehumidified the air. Why? Because that water on the coil can evaporate and get back into the air in the home.

get yourself a dehumidifier. Works wonders

Most appliances, vitamins sometimes, & many other things come packaged with those little silica dehumidifying packets in them. Drop one of those in each of your spice jars/bottles, salt & pepper shakers, canisters, sugar bowl etc & your problem is solved.

Walmart floral Dept & your local florists get lots of these in silk flowers they toss in the trash. Just ask & I'm sure they would be happy to give them to you for free. No food waste this way. Just don't open & eat the little packet contents. ;)

Use a whole house dehumidifier. The oversized HVAC system may also have something to do with this. HVAC systems are configured for specific size areas.

DampRid works too...in smaller spaces