Climate of Rajasthan

Geographical Factors Influencing Climate of Rajasthan

The climate of Rajasthan is primarily influenced by its geographical location, topography, and physiographic divisions. Rajasthan, the largest state in India, lies between latitudes 23°3'N and 30°12'N and longitudes 69°29'E and 78°17'E. The state is bordered by Punjab, Haryana, Uttar Pradesh, Madhya Pradesh, Gujarat, and Pakistan to the west. Rajasthan's climate is shaped by the presence of the Aravalli Range, the Thar Desert, and its elevation. The Aravalli Range divides the state into two distinct climatic zones: the western arid region and the eastern semi-arid region. The Thar Desert, located in the western part, contributes to extreme temperature variations and low rainfall. The state's elevation ranges from 150 meters in the west to over 1,000 meters in the east, affecting temperature and precipitation patterns. The proximity to the Arabian Sea and the Bay of Bengal also influences the monsoon winds, although Rajasthan receives minimal rainfall due to its distance from the coast. ⭐ परीक्षा महत्वपूर्ण तथ्य: • Aravalli Range is the oldest mountain range in India. • Thar Desert is also known as the Great Indian Desert. • Rajasthan covers 10.4% of India's total area. • Remember the role of Aravalli Range in dividing the climate zones. • Questions often ask about the impact of Thar Desert on Rajasthan's climate.

• Rajasthan is situated between latitudes 23°3'N and 30°12'N.
• The Aravalli Range runs northeast to southwest, dividing the state climatically.
• The Thar Desert covers approximately 60% of Rajasthan's area.
• Elevation varies from 150 meters (west) to over 1,000 meters (east).
• Western Rajasthan is arid, eastern Rajasthan is semi-arid.
• Distance from the sea results in low humidity and rainfall.
• 📌 Aravalli Range: Oldest mountain range in India, divides Rajasthan into two climatic zones.
• 📌 Thar Desert: Large arid region in western Rajasthan, influences temperature and rainfall.
• 📌 Physiographic Division: Classification based on physical geography affecting climate.

Classification of Climate Zones in Rajasthan

Rajasthan's climate can be classified into four distinct zones based on rainfall, temperature, and physiography: (1) Arid Zone (Western Rajasthan), (2) Semi-Arid Zone (Eastern Rajasthan), (3) Humid Zone (South-Eastern Rajasthan), and (4) Sub-Humid Zone (South Rajasthan). The Arid Zone, encompassing districts like Jaisalmer, Barmer, and Bikaner, receives less than 250 mm of rainfall annually. The Semi-Arid Zone, including Jaipur, Ajmer, and Alwar, receives 250–500 mm rainfall. The Humid Zone covers Kota, Bundi, and Jhalawar, with rainfall above 500 mm. The Sub-Humid Zone, represented by Udaipur and Mount Abu, receives the highest rainfall, often exceeding 800 mm. These zones are determined by the Indian Meteorological Department (IMD) and are crucial for planning agriculture, water management, and disaster mitigation. Each zone exhibits distinct temperature ranges, humidity levels, and vegetation types. ⭐ परीक्षा महत्वपूर्ण तथ्य: • IMD divides Rajasthan into four climate zones. • Jaisalmer is the driest district in Rajasthan. • Mount Abu receives the highest rainfall in the state. • Learn district examples for each climate zone. • Questions often ask about rainfall statistics and zone classification.

• Arid Zone: Western Rajasthan (Jaisalmer, Barmer, Bikaner) – rainfall < 250 mm.
• Semi-Arid Zone: Central Rajasthan (Jaipur, Ajmer, Alwar) – rainfall 250–500 mm.
• Humid Zone: South-Eastern Rajasthan (Kota, Bundi, Jhalawar) – rainfall > 500 mm.
• Sub-Humid Zone: Southern Rajasthan (Udaipur, Mount Abu) – rainfall > 800 mm.
• IMD classifies Rajasthan's climate zones based on rainfall and temperature.
• Zones affect agriculture, water resources, and disaster planning.
• 📌 Arid Zone: Region with extremely low rainfall (<250 mm).
• 📌 Semi-Arid Zone: Region with moderate rainfall (250–500 mm).
• 📌 Humid Zone: Region with high rainfall (>500 mm).