Tamil Nadu Weather: Chennai Hits 40.6°C, Records Hottest Day of the Year

Chennai is in the grip of an intense early-May heat spell, with temperatures soaring well above seasonal norms even as thunderstorms lash parts of northern Tamil Nadu. The city's Chennai Meenambakkam weather station recorded a scorching 40.6°C on Sunday, making it the hottest day of the year so far, as per weather blogger R Pradeep John. Despite the build-up of clouds, there has been little relief for residents, with conditions remaining hot, humid and uncomfortable through the day.

Tamil Nadu Weather Update

Across the region, the heat has been even more severe inland. Vellore registered a blistering 42.8°C, also its highest temperature of the year, underlining the widespread intensity of the current heatwave-like conditions. Other interior districts have similarly reported above-normal temperatures, with several locations seeing a rise of 2-3°C over usual levels.

On the other hand, while Chennai continues to swelter under partly cloudy skies, nearby areas have witnessed a shift in weather patterns. Thunderstorms have been reported in and around Arakkonam, bringing brief spells of rain and gusty winds. More broadly, parts of northern Tamil Nadu - including Ranipet district and Tiruvallur district - have experienced scattered showers, signalling the onset of pre-monsoon activity.

According to meteorological observations, maximum temperatures rose by around 2°C at isolated locations over interior Tamil Nadu in the past 24 hours, while coastal areas such as Chennai saw no significant change. Departures from normal remain positive across several pockets, reinforcing the persistence of above-average heat.

However, there is cautious optimism for Chennai residents. Weather models indicate that the city may see a gradual easing of temperatures after the next two days. Daytime highs, currently hovering around or above 40°C, are expected to dip by about 3°C, settling closer to 37-38°C. While still warm, this would mark a noticeable improvement from the present extreme conditions.

Humidity levels in Chennai have also played a role in amplifying discomfort. Morning observations showed relative humidity around 58%, with warmer night-time temperatures - minimums nearing 29-30°C - preventing any meaningful cooling after sunset.

Elsewhere in the state, contrasting weather extremes continue. Hill stations such as Kodaikanal recorded a chilly 9.7°C, the lowest minimum in the hills, while Madurai airport logged the lowest minimum of 21.1°C in the plains.

Heavy Rains Alert

The forecast also carries a yellow alert for heavy rainfall over the coming days, particularly across the Western Ghats and adjoining districts. Areas including Coimbatore, Nilgiris, Theni and Dindigul are likely to receive significant rainfall activity through the week, with the zone of precipitation gradually expanding to more districts.

In summary, Chennai remains firmly under a heat dome for now, with only cloud cover offering limited respite. Yet, with thunderstorms intensifying across northern Tamil Nadu and a slight dip in temperatures on the horizon, a modest break from the oppressive heat appears within reach.