In a country where topography varies wildly, climatic conditions are only bound to vary wildly too.
Classified as a hot tropical country by many, that is a definition that holds true for most of but not all of India. Exceptions include the northern states of Himachal Pradesh and Jammu & Kashmir in the north and Sikkim in the northeastern hills.

In most of India summer is hot. It begins in April and continues till the beginning of October. The heat peaks in June with temperatures in the northern plains and the west soaring above 46° C. The monsoons hit the country during this period too, beginning 1st of June when they are supposed to find the Kerala coast. Moisture laden trade winds sweep the country bringing relief to a parched northern India but devastation in the east where the rivers Brahmaputra and Ganga flood annually. Tamil Nadu in the south receives rainfall between October and December, beneficiary of the retreating monsoons.

India’s extensive coastline lies almost entirely below the Tropic of Cancer. The coast is usually warm and moist, prone to heavy rains in the monsoons and high summer temperatures. The eastern coast is vulnerable to cyclones. Winters here are mild and pleasantly sunny.

Hill Stations are the happy peculiarity that came up here when British wives and officers needed to flee the oppressive heat and malaria of the plains. Quaint towns that buzz along "mall roads", tucked away in hills all over India, they are now weekend getaways at the height of summer for families and couples from India’s cities.

The plains in the north and even the barren countryside of Rajasthan reel under a cold wave every year in December-January. Minimum temperatures could dip below 4° C but maximum temperatures usually do not fall lower than 12° C. In the northern high altitude areas of Himachal Pradesh, Jammu & Kashmir, Sikkim, and parts of Uttar Pradesh, it snows through the winter and even summer months are only mildly warm.

The east receives rain from April to August. September to November is relatively dry and the region only has sporadic showers. There are winter rains in December and January. This abates for two months and then it’s time for the monsoon season yet again. The central plateau has similar climate to the north but the mercury does not dip as low in winter. It rains from mid-June to September.