April in Vammala is the sunniest month of the year. In April, the weather in Vammala is typically cold. Average daily high temperature in April is about 8 degrees above zero. On average, Vammala has 10 sunny, 7 rainy, 7 partly cloudy, and 6 cloudy days in April. The rains are usually light. April as well as March, October, and November is considered the most uncomfortable time to visit Vammala.