August in Lauderdale-by-the-Sea is the rainiest and the hottest month of the year. In August, the weather in Lauderdale-by-the-Sea is typically hot. Average daily high temperature in August is about 31 degrees above zero. On average, Lauderdale-by-the-Sea has 26 rainy, 2 sunny, 2 cloudy, and 1 partly cloudy day in August. The rains are usually heavy. August as well as June, July, and September is considered the most uncomfortable time to visit Lauderdale-by-the-Sea.