April in Oban is the sunniest month of the year. In April, the weather in Oban is typically cold. Average daily high temperature in April is about 10 degrees above zero. On average, Oban has 17 rainy, 5 sunny, 5 cloudy, and 3 partly cloudy days in April. The rains are usually heavy. April as well as January, February, March, and May is considered the most uncomfortable time to visit Oban.