Monsoon - July to September when monsoon rains sweep across the country with daily torrential downpours and a high possibility of flooding making travel difficult in all areas except the northwest. Duration of monsoons may vary in different regions by several weeks. Cool - The months from October to February are some of the best times to visit as the weather is very pleasant with minimal rainfall in most places. Cyclones - June to September can suffer from these fierce tropical storms, which mainly affect the east coast of India, cause high winds, intense rain and a possibility of tidal waves. Carry a lightweight jumper as it can be chillingly cold inside air-conditioned buildings during hot weather.
Waterproofs are essential during the Monsoon Season when rainfall is heavy.
The Cool Season can experience relatively cold weather with snowfall further north - warm clothes are essential at this time of year. The Hot Season when the weather is reasonably warm and rainfall is minimal - although waterproofs are useful. Warmer clothes are essential for the evenings. Views of the lush hillside, famous for its tea plantations, can be hampered during these wet periods. Waterproofs are an absolute necessity and a few warm layers are useful too.