April in Kathmandu is the windiest month of the year. In April, the weather in Kathmandu is typically warm. Average daily high temperature in April is about 25 degrees above zero. On average, Kathmandu has 23 sunny, 6 partly cloudy, and 1 rainy day in April. The rains are usually light. April as well as March and November is considered the most comfortable time to visit Kathmandu.