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December and January are the most pleasant, coinciding with the famous Margazhi music and dance festival (the world's largest classical Indian music event, with over 1,000 free concerts across the city). Walk Marina Beach (one of the world's longest urban beaches), explore Mylapore around the Kapaleeshwarar Temple, see the Government Museum's bronze galleries, and take a heritage walk through Fort St. George and George Town. Day trips reach Mahabalipuram (UNESCO Pallava-era temples) and Pondicherry.
April to June is very hot and humid (over 40°C and sticky). The October to December northeast monsoon brings flooding (the December 2015 and 2023 floods were catastrophic). Beach swimming is risky due to currents. Drink only bottled water. Food hygiene varies wildly. A day in Chennai should be built after the practical checks, not before them. Do not let the map of Chennai make the route look simpler than it is.
Current conditions and the practical reference material that helps turn the saved places into a trip.
7-day forecast from Open-Meteo. UV badges flag days when sun protection matters (3 and above is moderate; 8 and above is risk territory for unprotected fair skin within 30 minutes).
About 85% of the year's rain falls in these months. Typical highs around 31°C, lows around 24°C.
About 31mm of rain a month, against 178mm in the wet season.
Chennai, also known as Madras, is the capital and largest city of Tamil Nadu, the southernmost state of India. It is located on the Coromandel Coast of the Bay of Bengal. As per the 2011 Indian census, Chennai is the sixth-most-populous city in India and forms the fourth-most-populous urban agglomeration. The city is coterminous with Chennai district, which together with the adjoining suburbs constitutes the Chennai Metropolitan Area, one of the largest metropolitan areas of India.
The links below support the changing or licensed reference material on this page. Personal notes and ordinary geographic facts are not footnoted individually.
Monthly highs, lows, rainfall — long-term averages, NASA POWER.
Maps, image licenses, and the full dataset registry are listed in site credits.