Three seasons that are found in Rajasthan are:

1. Summer Season 

2. Rainy Season 

3. Winter Season

1. Summer Season: The period of summer season in Rajasthan is from March to mid – June. This season starts along with northern movement of the sun. In the month of June, when the sun shines over the Tropic of Cancer, the temperature of most of Rajasthan rises up to 30°C to 36°C. The temperature in western Rajasthan reaches up to 48°C.

It is miserably hot in the day time and the body begins to bum due to excessive heat. Violent Loo blows and dusty storms are experienced. The hot, dry and dusty winds, called loo, disturb the normal life significantly. As compared to the western part, the eastern part of Rajasthan shows less variation.

2. Rainy Season: The period of this season is from mid June to September. After mid – June, air pressure and the winds direction starts, changing. Monsoon enters into Rajasthan in the last week of June or in the beginning of July. Both the branches of Monsoon Arabian Sea branch and Bay of Bengal branch cause rainfall in Rajasthan.

50 cm Ishoyet line divides Rajasthan into two parts. Rainfall amounting to 50 – 100 cm occurs in the eastern part of Aravalli, while less than 50 cm rainfall occurs in the western part. Most of the rainfall occurs in this season in Rajasthan. The amount of rainfall keeps on decreasing while moving from east to west and from south to north.

3. Winter Season: Winter season falls between the months of October and February. The weather department of India has divided this season into two parts Autumn and Dry winter.

(a) Winter or Autumn Season: (Reversal Period of Monsoon): In the month of October, Monsoon starts returning as the low atmospheric pressure in the land part ends and the temperature in Indian Ocean relatively starts rising up, and so an area of low air pressure develops there. Due to high temperature and high rate of moisture in the atmosphere, there is humidity. It is the time of returning monsoons. 

(b) Dry Winter Season: The actual arrival of winter season in Rajasthan is in the month of December,along with the movement of the sun towards the south. The direction of winds starts changing. North-Western cold winds begins to blow in entire Rajasthan. The western temperate cyclones cause rainfall in some parts of Rajasthan in the months of December – January.

This winter rainfall is locally known as Mavath. This winter rainfall is very useful for the crops of Rabi. At this time, the temperature is found to be less than 10° C, while in the region of Hadoti, it is about 20° C. When snowfall takes place in Himalayas, it is icy cool in Rajasthan and is known as cold – current. At many places in Rajasthan, the temperature falls below the freezing point.