When you get to school, spend as much time as you can outdoors. Study outside, eat outside, socialize outside, do your strength training/stretching etc. outside. The more you are in the humidity and less time you spend in the AC, the more you will get used to it.
If you are a heavy sweater, you may need to work with a nutritionist to make sure you are able to keep your electrolytes up and don't end up curled in a fetal position from cramping at the end of every workout.
Most importantly, just keep at it. After a year or two, you will fully acclimate and will find the humidity to be like training at altitude. When you head north for competition in cool and dry places, you will feel like superman.