The climate of Rajasthan can be neatly divided into four seasons: Pre-Monsoon, Monsoon, Post-Monsoon and Winter.

Pre-monsoon - which extends from April to June, is the hottest season, with temperatures ranging from 32 Degree C.to 45 Degree C. Mt. Abu registers the lowest temperature at this time. In the desert regions, the temperature plummets as night falls.

The Monsoon is a welcome arrival in late June in the Eastern and South eastern regions of the State, finally falling in mid-July in the desert zones. Unless the rains are insubstantial, the monsoon is accompanied by a decrease in temperatures, with average maximum temperatures of between 29.5 Degree C. to 32.2 Degree C. in the south and South-East of Rajasthan and an average of above 37.7 Degree C. in the North and North-Western regions.

The third season is the post monsoon. The monsoon generally passes over the entire state by mid September. It is followed by a second hot season, with relatively uniform temperatures registered across the state. In October the average maximum temperature is 33 Degree C. to 38 Degree C. and the minimum is between 18 Degree C. to 20 Degree C.

The fourth season – of most interest to visitors – is the winter or cold season from December to March. There is a marked variation in maximum and minimum temperature and regional variations across the state. January is the coolest month of the year.