In April, the weather in Bassano del Grappa is typically warm. Average daily high temperature in April is about 15 degrees above zero. On average, Bassano del Grappa has 16 rainy, 10 sunny, and 4 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 Bassano del Grappa.