how is the winter season here?
It has the mildest winters in the Continental United States.
Climate of Florida
On average, Florida has the mildest winters in the Continental United States. Average lows range from in Key West to near degrees Fahrenheit at Tallahassee, while daytime highs range from at Tallahassee to at Miami. Predominant tropical easterly winds across central and southern Florida keep temperatures warm during the winter. 
when does rainy season end in south florida October what is this climate? Humid subtropical.
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Climate of Florida [SEP] Winter
On average, Florida has the mildest winters in the Continental United States. Average lows range from in Key West to near degrees Fahrenheit at Tallahassee, while daytime highs range from at Tallahassee to at Miami. Predominant tropical easterly winds across central and southern Florida keep temperatures warm during the winter. Occasional strong cold fronts move southward down the peninsula with freezing or near freezing temperatures on a few nights into inland areas of central Florida every few years. A few times each decade Miami might see a winter night fall below . El Niño winters tend to be cooler due to increased cloud cover, but tend to have fewer freezes.