Weather is probably a major factor when you plan your trip to Haines City, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July, with an average temperature of 27°C, while the coldest months are January and February, with an average of 18°C. The rainiest months in Haines City are August, July, September and June, with each month seeing an average of 217 mm of rainfall.