Chennai: The city and the rest of Tamil Nadu may have to brace for hotter days this summer, as the India Meteorological Department (IMD) has forecast heatwave spells between March and May. Seasonal outlook suggests above-normal maximum temperatures over most parts of the state.Heatwave days are likely to range from three to nine days along much of coastal Tamil Nadu, including Chennai, and could extend to nine to 15 days in some adjoining northern districts. Minimum temperatures during the season are expected to remain largely near normal.According to the IMD, a heatwave is declared when the maximum temperature reaches at least 40C in plains (30C in hilly regions) and is 4.5C to 6.4C above normal, or when the actual maximum temperature is 45C or higher irrespective of departure from normal. May is the peak summer month in the city, with average maximum temperatures touching 37.3C. For March, however, the outlook is relatively moderate. Maximum temperatures across Chennai and districts up to the delta region are likely to remain near normal, while some interior districts may record below-normal daytime temperatures. Night temperatures are expected to stay near normal over most parts of the state, except some central districts. In its heatwave outlook, IMD cautioned that “the increased likelihood of heatwave conditions may pose significant risks to public health, water resources, power demand, and essential services, particularly affecting vulnerable populations.”“The public is advised to stay hydrated, avoid peak heat hours, and take special care of vulnerable individuals during this season,” the agency said.
