The Tamil Nadu government on Thursday issued a fresh health advisory as heatwaves are expected to continue across the state.Due to higher maximum and minimum temperatures, combined with high humidity, people in coastal areas of the state are likely to feel discomfort, the Regional Meteorological Centre (RMC) said in a bulletin.With the temperature crossing 40 degrees Celsius in several districts, including Chennai, which recorded 41.1 degree Celsius on Wednesday, the heatwave is expected to continue for a few more days, the bulletin said.A release from the State government said that the public health and disease control department issued a fresh bulletin cautioning that infants, young children, pregnant women and the elderly are at higher risk of heat-related illness.It further said that the average human body temperature is about 37 degrees Celsius. When ambient temperature exceeds the body’s average temperature, the body dissipates excess heat through sweating and increased blood flow to the skin, helping to return core temperature to normal.Accordingly, excessive heat and heavy sweating can lead to loss of salts and fluids from the body, causing symptoms such as severe thirst, headache, fatigue, dizziness, muscle cramps, reduced urine output (concentrated, dark yellow urine), fainting and pain.All the Corporations, including in Chennai, have prepared treatment facilities for heat-related illnesses across their network of health institutions, including in urban primary health centres, urban welfare centres, urban social welfare centres and government hospitals. The guidelines added that public awareness campaigns about heat risks are underway.Published on May 28, 2026