Hot and Dry Climatic Conditions
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Hot and Dry Climatic Conditions


The hot and dry zone lies in the western and the central part of India; Jaisalmer, Jodhpur and
Sholapur are some of the towns that experience this type of climate.

A typical hot and dry region is usually flat with sandy or rocky ground conditions, and

sparse vegetation comprising cacti, thorny trees and bushes. There are few sources of water on the
surface, and the underground water level is also very low.  In summer, the maximum ambient temperatures are as high as 40–45 ºC during

the day, and 20–30 ºC at night. In winter, the values are between 5 and 25 ºC during the day and 0
to 10 ºC at night.

The climate is described as dry because the relative humidity is generally very low, ranging from 25 to 40 % due to low vegetation and surface water bodies.

The design criteria should therefore aim at resisting heat gain by providing shading, reducing

exposed area, controlling and scheduling ventilation, and increasing thermal capacity. The
presence of “water bodies” is desirable as they can help increase the humidity, thereby leading to
lower air temperatures. The ground and surrounding objects emit a lot of heat in the afternoons and
evenings. As far as possible, this heat should be avoided by appropriate design features.
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