A new study highlights humid heat-high temperature combined with high humidity-as a rapidly growing climate threat in India, with Kerala emerging as a major hotspot due to its coastal monsoon-driven climate and rising heat stress conditions.
BulletsIn
- A recent study published in Climate Dynamics identifies humid heat as a more dangerous climate risk than dry heat, as it disrupts the body's ability to cool through sweat evaporation.
- Researchers found that Monsoon systems strongly influence when and where humid heatwaves occur, making seasonal weather patterns a key driver of heat stress risk in India.
- Kerala is identified as highly vulnerable due to persistent high humidity, heavy rainfall patterns, and coastal climate conditions that amplify wet-bulb temperature stress.
- The study shows that humid heat exposure can trigger health risks like Heatstroke even at temperatures below traditional heatwave thresholds used in current warning systems.
- Coastal and lowland regions face increasing danger as rising global temperatures combine with humidity, reducing safe working hours for outdoor labourers and workers.
- Researchers highlight that India's heat warning systems still rely heavily on temperature alone, ignoring humidity-based indicators like Wet-bulb temperature and heat index.
- The study suggests that improved forecasting of monsoon-linked humidity patterns could allow early warnings several weeks in advance for better preparedness.
- Experts emphasize urgent adaptation measures such as heat action plans, cooling centers, and revised work schedules to reduce health risks in humid regions like Kerala.

