Hope I am not too late for the OP. I think the east coast of Florida in the summer is great. Yes - it is hot (west coast of Florida is hotter - and interior Florida is the worst). But you can wind up with 90 degree weather anywhere on the east coast of the US in the summer - and we have more air conditioning than anyone else

. I live in extreme northeast Florida - but - curiously enough - we are a summer beach resort area. As far as golf is concerned - rates are more or less shoulder season or lower - depending on where you play.
To be honest with you - for the best deals (and the same weather) - I'd head to southeast Florida - where it is definitely low season. I in fact try to get to a south Florida resort at least once a summer just for a change of scenery. For golf - I would recommend a few places - but my favorite is The Breakers in Palm Beach. It's a big resort. Very historic. There's an old Donald Ross course there on the ocean. Very short - very tight fairways - challenging greens. If you hit "long and wrong" - this course will encourage you to correct your bad habits

. The resort also has another more contemporary course off premises.
There are dozens and dozens of golf choices here though - and if you tell me a bit more perhaps I can narrow things down for you. One word of caution. The most famous course where I live - the Stadium Course at the TPC at Sawgrass - the one with the island green - is closed for renovations until November (also - the old clubhouse has been torn down and the new one won't be ready until next year). Its sister course is open - but I don't think it's worth coming here from Sweden to play it (I play it every week - but I can't recommend the TPC now for long distance travelers). Robyn