Geographically, Andhra Pradesh is composed of most of the eastern half of the Deccan plateau and the plains to the east of the Eastern Ghats. Andhra Pradesh is divided into three regions. The northern part of the plateau is the Telangana region and the southern part is known as Rayalaseema. These two regions are separated by the River Krishna. The third region is Coastal Andhra. The plains to the east of Eastern Ghats form the Eastern coastal plains. The Eastern Ghats are discontinuous and individual sections have local names. The Kadapa Basin formed by two arching branches of the Eastern Ghats is a mineral rich area. The coastal plains are for the most part delta regions formed by the Godavari, Krishna, and Penner rivers. The Eastern Ghats are a major dividing line in the state's geography. The Ghats become more pronounced towards the south and extreme north of the coast. The Eastern Ghat region is home to dense tropical forests, while the vegetation becomes sparse as the Ghats give way to the Deccan Plateau, where shrub vegetation is more common. Most of the coastal plains are put to intense agricultural use. The west and southwest parts of Andhra Pradesh have semi-arid conditions.
The climate of Andhra Pradesh varies considerably, depending on the geographical region. Monsoons play a major role in determining the climate of the state. Summers last from March to June. In the coastal plain, the summer temperatures are generally higher than the rest of the state, with temperature ranging between 20 °C and 41 °C.
July to September is the seasons for tropical rains in Andhra Pradesh. The state receives heavy rainfall from Southwest Monsoon during these months. About one third of the total rainfall in Andhra Pradesh is brought by the Northeast Monsoon. October and November see low-pressure systems and tropical cyclones form in the Bay of Bengal which, along with the Northeast Monsoon, bring rains to the southern and coastal regions of the state. November, December, January, and February are the winter months in Andhra Pradesh. Since the state has a long coastal belt the winters are not very cold. The range of winter temperature is generally 12 °C to 30 °C.
Hyderabad is the capital and, along with the adjoining twin city Secunderabad, is the largest city in the state.Visakhapatnam, Andhra Pradesh's main seaport, is the second largest city and is home to the Indian Navy's Eastern Naval Command. Due to its location and proximity to major rail and road routes, Vijayawada is a major trading center. It is the third largest city of the state, Warangal the historical city of Andhra Pradesh, comprised of Warangal, Hanamkonda and Kazipet, which is also called Tri City, is the fourth largest city of Andhra Pradesh followed by Tirupati, Rajahmundry, Kakinada and Guntur. Other important cities of the state are Karimnagar,Nellore, Nizamabad, Kurnool, Kadapa, and Srikakulam.