This is completely down to personal taste. Common sense dictates that one wears fresh, zesty scents in the heat, and heavy, rich ones in the cold. But who likes to be dictated to -- and by something as boring as common sense?
Personally, I find that certain “winter” fragrances containing incense and amber really bloom in the heat of summer, reaching their full potential. And wearing a gorgeous, tropical floral like Frédéric Malle Carnal Flower can rescue me from winter's icy grasp.