April in Santa Barbara is the cloudiest month of the year. In April, the weather in Santa Barbara is typically hot. Average daily high temperature in April is about 31 degrees above zero. On average, Santa Barbara has 27 rainy, 2 cloudy, and 1 partly cloudy day in April. The rains are usually heavy. April as well as January, March, May, and June is considered the most uncomfortable time to visit Santa Barbara.