January in Lauderdale-by-the-Sea is the coldest month of the year. In January, the weather in Lauderdale-by-the-Sea is typically warm. Average daily high temperature in January is about 22 degrees above zero. On average, Lauderdale-by-the-Sea has 13 partly cloudy, 11 sunny, 6 rainy, and 1 cloudy day in January. The rains are usually light.