January in Santa Barbara is the sunniest and the coldest month of the year. In January, the weather in Santa Barbara is typically hot. Average daily high temperature in January is about 30 degrees above zero. On average, Santa Barbara has 19 rainy, 6 sunny, 4 partly cloudy, and 2 cloudy days in January. The rains are usually heavy. January as well as March, April, May, and June is considered the most uncomfortable time to visit Santa Barbara.