I’m closer to the mid-central part of Florida and it get’s pretty sticky here. I live right on the west coast of Florida, though, so we get a nice sea breeze… but the further inland you go, the more it feels like a nasty steamy jungle… bleh
I would have to agree about the cotton. I would also suggest maybe a cotton rayon blend or something that has drape, rather than being clingy and stretchy. If the fabric clings to your skin, it doesn’t matter what it’s made of, you will feel miserable, here. That’s excluding your various tank tops and such. Why not make the baby a cute little sundress? That way she could wear it now. Maybe with a cute little pair of bloomers.
As far as winter goes, even down here, near Tampa, we get ground freezing every winter. The closer you are to the city, the less you see it… but in the outskirts and countryside, it can get REALLY cold… enough to freeze our citrus and strawberries.