As stated in previous posts Florida is a large state with many different terrains and insect realities. But for someone contemplating a move from Portland, OR to the Sunshine State I would suggest spending a week in Florida during the months of either June, July or August prior to making permanent arrangements to live here. Bugs are a minor annoyance compared to the heat and humidity. You won't have to worry about those screened porches because you will be in an airconditioned box of some sort for the duration of summer.......
Florida also has very distinct climate differences. South Florida does not get US weather patterns. Now, in Tampa, Orlando, Jacksonville and through that area you get oppressively hot weather. In South Florida it never reaches those temperatures, never crosses 96 or 97 and generally cooler.
In Fort Lauderdale, the average high in July and August is 90 degrees. In Miami 91 degrees. Humid but always a nice breeze off the ocean. We moved from Charlotte NC so no change in the summer climate for the most part although Charlotte could spike higher than South Florida. We miss the humidity when we travel to colder areas where heat is used indoors drying the air out. It's just what one likes. And for any making a major change I would recommend spending time there if possible the worst time of year, but recognize it is the worst and not the average.