Sebastian has great weather all year-round. The average temperature is 72° Fahrenheit (22°C). It's warm but not oppressive like south Florida. Winters are mild, from the mid 60's to 80's. Summers are between the 70's and 90's. And since Sebastian is on the water, its climate is tempered by mild breezes off the ocean.
Pack your swim suit and come check it out. Life it good here!