Vadodara features a tropical savanna climate (Aw) under Köppen's Climate classification. 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 July – the average summer maximum is 40 °C (104 °F), and the average minimum is 23 °C (73 °F). From November to February, the average maximum temperature is 30 °C (86 °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 cm (37 in), but infrequent heavy torrential rains cause the river to flood.