Dewas lies in the central part of the Madhya Pradesh. The city lies north-east of Indore, south-east of Ujjain and southwest of Shajapur. Dewas is located on the level plains of the Malwa plateau. To the south, the land rises gently to the Vindhya Range, which is the source of the Chambal and Kali Sindh rivers.
Dewas falls under two major drainage basins – the Ganga in the north and the Narmada in the south. River Shipra, also known as The Holy River, flows through Dewas and is the main source of irrigation to the farming lands. Ground water is another major source of irrigation and accounts for 82% of the irrigation.
Lying at 22.96o N and 76.06o E, Dewas is nearly 1,755 ft (535 m) above the sea level. The climate of Dewas district is semitropical, characterized by hot summer and well-distributed rainfall during the south west monsoon season. January is the coldest month with the temperature falling as low as 2o to 3oC. The summer season stretches from March to June. May is the hottest month, during which the temperature may go up to 45o C.
Dewas experiences an annual rainfall of about 1,083 mm. Rainfall increases from west to east and is lowest in the southwestern portion. About 90% of the rainfall takes place from June to September. Only 5% to 8% of the annual rainfall takes place in the winter months and only about 2% in summer. The normal rainfall follows a normal distribution during the year.
The monsoon season, which starts in the month of June and extends up to September, is the best time to visit Dewas. The rainfall brings new energy and accentuates the natural, scenic beauty of the city. The weather is comfortable during these months, enabling tourists to rejuvenate themselves by exploring the places of interest.