In October, the weather in Sunny Isles Beach is typically warm. Average daily high temperature in October is about 27 degrees above zero. On average, Sunny Isles Beach has 19 rainy, 10 sunny, 1 cloudy, and 1 partly cloudy day in October. The rains are usually heavy. October as well as June, July, August, and September is considered the most uncomfortable time to visit Sunny Isles Beach.