October and November are the best months to visit Nepal when the air is crisp and clear, and the country is lush and green following the monsoon. February to April is also a good time when the weather is warming up and many flowers are in bloom. Some haze does set in by April obscuring the mountain views. The weather is clear but chilly in December and January. May and early June are the warmest months, and the monsoon is prevalent from the middle of June to September. At 4000 meters, the Kathmandu Valley is relatively temperate. Chitwan in the Terai region is warm and can get quite hot by April.
Nepal's climate follows a monsoonal two-season pattern. The dry months last from October to May with the monsoons from June to September. The latter months also tend to be very hot and humid with temperatures in some parts of the country often rising above 35ºC.
