Chennai, the largest city in southern India — known until 1996 as Madras — faces the Bay of Bengal. It has a very hot and humid climate almost year round, so it's best to avoid trying see and do everything and instead explore at a relaxed pace, especially at midday. Experiencing the city's vibrant temples and enjoying its beaches are the main reasons for visiting Chennai. The region's residents speak Tamil, although English is the lingua franca among Indians whose first language isn't Tamil, so it is widely spoken.