Mangaluru's Humidity Creates Significant Discomfort Despite Lower Temperatures
While Mangaluru remains relatively cooler than Bengaluru this mid-summer, recording 34°C compared to Bengaluru's 37°C on April 16, high humidity levels of around 80% continue to drive significant discomfort among residents. According to IMD data, temperatures in Mangaluru are expected to rise by about a degree over the weekend, bringing it closer to Bengaluru's projected high of 35°C by April 27.
Heat Index and Perceived Discomfort
A senior IMD scientist explained that the heat index factors in both temperature and humidity to reflect perceived discomfort. "For instance, at 34°C with 70% humidity, excessive sweating leads to loss of electrolytes. In such cases, while it may not qualify as a heatwave, it is categorised as ‘hot and humid' conditions," the scientist said. This scientific perspective highlights how humidity amplifies the effects of heat, making conditions feel more oppressive than temperature readings alone would suggest.
Regional Variations and Heat Risk Assessment
Even as North Interior Karnataka is under a heatwave forecast until Sunday, coastal districts are likely to experience hot and humid conditions. Micro-level data indicate variations in heat intensity across the district, with Kadaba flagged in the state's heat risk report. On April 16, the KSNDMC listed Kadaba in Dakshina Kannada among taluks where maximum temperatures exceeded 40°C. However, no taluk in the state crossed the 42°C threshold that triggers an extreme heat alert.
Moderate Heat Forecast for Specific Taluks
Ahead of the weekend, the state's disaster monitoring centre has not placed any district under extreme or very high heat categories. However, Belthangady, Kadaba and Puttur taluks are expected to experience moderate heat conditions (32-34°C) until Saturday. An official from the Dakshina Kannada district disaster management authority said no heatstroke cases have been reported so far, indicating that while conditions are uncomfortable, they haven't yet reached critical health emergency levels.
Comparative Analysis with Bengaluru
The temperature differential between Mangaluru and Bengaluru provides an interesting case study in how humidity affects perceived temperature. While Bengaluru typically experiences higher absolute temperatures, Mangaluru's coastal location creates humidity levels that make similar temperatures feel significantly more uncomfortable. This combination of heat and moisture creates challenging conditions for outdoor activities and daily life in the coastal city.
Preparedness and Monitoring
Authorities continue to monitor the situation closely, with disaster management teams prepared to respond if conditions worsen. The moderate heat forecast for specific taluks suggests localized variations that require targeted attention. Residents are advised to take precautions against heat-related illnesses, particularly those working outdoors or vulnerable to temperature extremes.
