Singapore is usually 28-30 degrees celsius with humidity at 80%. Florida is less humid, no?
What job were you looking at? Link please?
Honestly, you ought to focus on getting some official coaching credentials at this point. Sounds like it's the more realistic job if the other option is being a professional tennis player...
Today in Florida was roughly that temperature, even 33-34 Celsius here today. Humidity is always at least 70% here, so the temperature doesn't seem too bad.
I was looking at this- http://origintennisnews.blogspot.sg/
I have the credentials, I just don't have the playing career records yet. And besides, they said the minimum I'd have to stay over there would be 2 years, and I was planning to do just 1. Hopefully I can get enough results to get a coaching job in USA, hopefully Bradenton, within the next few months so I don't have to teach history.