When to Visit Chennai

brings the most agreeable conditions Chennai offers.

January stays pleasant, with highs nudging to 30°C (87°F) and lows at 22°C (71°F). Rainfall drops to nearly nothing, around 5mm, and the air still carries the relative freshness left by the northeast monsoon. It's arguably the sweetest month in Chennai, when mornings feel almost crisp by local standards.

March signals the start of the heat. Highs climb to 32°C (91°F) with lows at 24°C (75°F), and while rainfall stays negligible at around 3mm, the sun takes on a new intensity. Chennai in March is still manageable if you structure outdoor activities around early mornings and evenings.

April steps up the pressure considerably. Highs hit 34°C (94°F) with lows staying at 26°C (79°F), and though only around 18mm of rain falls, the humidity makes the heat feel denser than the numbers suggest. Pre-monsoon thunderstorms occasionally break the tension in the afternoons.

May is Chennai at its most demanding. Highs reach 37°C (98°F) while lows sit at 28°C (82°F), and around 51mm of rain falls, often in short, sharp afternoon storms that provide brief relief but little cooling. The city slows noticeably mid-afternoon; anyone visiting Chennai in May should plan accordingly.

June stays near the same peak heat at 37°C (98°F) during the day, with lows at 27°C (81°F). The southwest monsoon has arrived, bringing around 76mm of rainfall, and the slightly increased cloudiness takes the edge off the intensity compared to May. Chennai's outdoor dining scene moves indoors.

July sees the first meaningful temperature easing, with highs at 35°C (95°F) and lows at 26°C (79°F). Rainfall climbs to around 114mm and the city's rhythm adjusts to the wet season. Flooding in low-lying areas tends to be occasional rather than persistent at this stage.

August continues the pattern with highs at 34°C (94°F) and lows at 25°C (77°F). At around 142mm of rainfall, it's noticeably wetter than the early monsoon months. Chennai in August has a certain energy to it despite the conditions, with festivals and local life continuing largely uninterrupted.

September is the tail of the southwest monsoon and, interestingly, the transition month before the northeast monsoon gathers strength. Highs stay at 34°C (93°F) with lows at 25°C (78°F), and about 145mm of rain falls. The weather can feel unsettled, alternating between clear spells and sudden downpours.

October marks the arrival of the northeast monsoon and a significant ramp-up in rainfall, with around 279mm falling across the month. Temperatures ease slightly to highs of 32°C (89°F) and lows of 24°C (76°F), which is more comfortable, though the persistent grey skies and wet streets make sightseeing tricky.

November is Chennai's wettest month by a wide margin, with roughly 378mm of rainfall, and it's worth saying that clearly rather than softening it. Temperatures are among the year's mildest, with highs around 29°C (85°F) and lows at 23°C (73°F), but that comfort comes packaged with serious rain. Flooding can affect transport and low-lying neighborhoods. Plan accordingly.

December sees the northeast monsoon begin to withdraw. But not before delivering another 183mm of rainfall in the early part of the month. By late December, conditions improve noticeably, highs settle at 28°C (84°F) with lows at 21°C (71°F), and Chennai starts to feel like itself again. Pack layers.