CHENNAI: With Tamil Nadu’s election campaign entering its most intense phase, an equally fierce heatwave may also be on its way, especially in north coastal Tamil Nadu, including Chennai, and a few interior districts. Met officials have indicated that while the first 10 days of April may see relatively mild conditions aided by scattered rain, a sharp rise in temperature is expected thereafter, coinciding with peak political activity ahead of the April 23 polls.
According to the latest weather outlook issued by the India Meteorological Department (IMD), Tamil Nadu is likely to witness above-normal heatwave days, particularly across northern and coastal districts, including Chennai. Even as parts of the state may receive normal to above-normal rain, officials warn that rising temperatures will dominate weather conditions through most of the month.
The Regional Meteorological Centre (RMC), Chennai, has indicated that both day and night temperatures are expected to remain above normal, reducing the chances of relief even after sunset.
Heatwave days likely to increase to 4-5 days in April this year, says official
This could significantly increase heat stress, especially for those attending political rallies, roadshows and door-to-door campaigns.
“The average number of heatwave days in April is usually around two to three. This year, it is likely to increase to four to five days,” said VR Durai, Director of the Area Cyclone Warning Centre. “The heatwave will be more intense over north coastal Tamil Nadu, including Chennai, and parts of the interior districts influenced by hot winds from the Rayalaseema region,” he added.
Stating that temperatures are expected to remain relatively mild until around April 10 due to ongoing rainfall activity, Durai said, “Post April 10, heatwave conditions will set in, with peak heat stress likely between 12 noon and 2 pm.”
The timing of the heatwave coincides with the most crucial phase of electioneering, raising concerns over public turnout and the health of campaign workers. Large gatherings under direct sunlight, coupled with high humidity in coastal areas, could exacerbate fatigue and dehydration.
Recognising the risks, the IMD has directed its regional centres to issue special advisories to poll-bound states. Officials at RMC have confirmed that daily heat advisories are being shared with election authorities in Tamil Nadu and neighbouring Kerala.
“The idea is to ensure preparedness. Election officials need to factor in heat conditions while planning polling arrangements and voter facilities. Political parties must calibrate their campaigning schedule and avoid organising mass public rallies in the districts that are enduring heatwave,” an IMD official said.
The IMD has also flagged the influence of broader climatic conditions, including El Nino-like patterns, which tend to elevate temperatures and alter seasonal weather behaviour. Authorities have urged the public to stay hydrated, avoid prolonged exposure to direct sunlight and follow official weather advisories closely.