There are three main seasons: summer, monsoon and winter. Aside from the monsoon season, the climate is dry. The weather is hot through the months of March to June — the average summer maximum is 36 °C (97 °F), and the average minimum is 23 °C (73 °F).

From November to February, the average maximum temperature is 30 °C (85 °F), the average minimum is 15 °C (59 °F), and the climate is extremely dry. Cold northerly winds are responsible for a mild chill in January. The southwest monsoon brings a humid climate from mid-June to mid-September.

The average rainfall is 93.2 cm (36.7 inches), but infrequent heavy torrential rains cause the river to flood.

The highest temperature recorded is 47 °C (116.6 °F) and the lowest is 5 °C (41 °F). In recent years, Ahmedabad has suffered from increasing air, water and soil pollution from neighbouring industrial areas and textile mills.

Ahmedabad is divided by the Sabarmati into two physically distinct eastern and western regions. The eastern bank of the river houses the old city, which includes the central town of Bhadra. This part of Ahmedabad is characterised by packed bazaars, the clustered and barricaded pol system of close clustered buildings, and numerous places of worship.

It houses the main railway station, the General Post Office, and few buildings of the Muzaffarid and British eras. The colonial period saw the expansion of the city to the western side of Sabarmati, facilitated by the construction of Ellis Bridge in 1875 and later with the modern Nehru Bridge.

This part of the city houses educational institutions, modern buildings, well-planned residential areas, shopping malls, multiplexes and new business districts centred around some roads like Ashram Road and Sarkhej-Gandhinagar Highway.