Rajasthan Summer Season GK

This chapter explains Rajasthan's summer season in an exam-focused way. It covers the astronomical background, heat low over the Thar Desert, loo winds, dust storms, bhabhulya, dogda, temperature-humidity distribution, zaid crops, water stress, pastoral movement and solar energy.

7.1 Astronomical Context and Duration#

Summer in Rajasthan generally extends from mid-March to mid-June, until the arrival of the monsoon. After the vernal equinox on 21 March, the Sun appears to move northward toward the Tropic of Cancer. By May and June, solar heating becomes intense across Rajasthan.

| Month | Temperature Memory | Exam Point | | :--- | :--- | | March | 30°C-35°C | Beginning of summer | | April | 35°C-40°C | Rapid heating | | May | 40°C-48°C | Peak heat begins | | June | 45°C-50°C+ | Maximum summer heat |

7.2 Pressure Gradient and Winds#

The sandy surface of the Thar Desert heats strongly in May and June. This creates a thermal low, also called the Thar heat low. Pressure may fall to around 997 mb in western desert districts such as Jaisalmer, Phalodi, Bikaner and Sri Ganganagar.

This low-pressure center is important because it attracts winds from surrounding higher-pressure areas and helps pull the south-west monsoon toward north-west India.

7.3 Loo: Hot and Dry Summer Wind#

Loo is the most famous summer weather phenomenon of Rajasthan. It is a hot, dry and scorching wind that commonly blows from the west and north-west during May and June, especially in the afternoon.

7.4 Dust Storms and Bhabhulya#

Dust storms are common in western and northern Rajasthan because sandy land heats quickly and convectional currents become strong. Their frequency generally increases from south-east to north-west.

Bhabhulya is a local short-lived dust whirl, similar to a dust devil. It forms due to sharp local heating and low pressure near the surface. It usually lasts for a few minutes.

7.5 Dogda and Pre-Monsoon Showers#

Dogda refers to pre-monsoon showers that occur before the regular monsoon. They are usually convectional and may be accompanied by thunder, lightning and sometimes hailstorms.

These showers may benefit zaid crops, reduce heat temporarily and prepare the atmosphere for monsoon transition.

7.6 Regional Temperature and Humidity#

Western Rajasthan records the highest summer temperatures and lowest relative humidity. Mount Abu remains comparatively cooler due to altitude. South-eastern Rajasthan has relatively higher humidity than the desert region.

7.7 Zaid Crops#

Zaid crops are grown between rabi harvest and kharif sowing. Their period is mainly mid-March to June. Important zaid crops include watermelon, muskmelon, cucumber, moong, fodder crops and vegetables.

These crops depend heavily on irrigation because summer evaporation is high.

7.8 Social and Ecological Effects#

Summer creates water stress, falling groundwater level, heat stress in humans and livestock, crop damage and seasonal movement of pastoral communities. Transhumance among pastoral groups such as Rebari is linked with fodder and water availability.

The same season is also highly favorable for solar power because Rajasthan receives strong solar radiation and long sunshine hours.

7.9 Summer and Climate Change#

Climate change can increase heat waves, water stress and extreme summer events in Rajasthan. Adaptation requires heat alerts, water conservation, shade planning, drought-resistant crops, solar-energy use and public-health awareness.

Quick Factor Map#

Exam Revision Chain#

Northward Sun -> Thar heat low -> loo -> dust storms -> bhabhulya -> dogda -> zaid crops -> water stress -> solar energy -> climate-change adaptation

AI-Friendly Tags#

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