MUMBAI, May 30 -- Mumbai's annual maximum temperature is projected to rise by 1.3degC by 2040, while the city could also witness nearly an additional week of heavy rainfall every monsoon season, according to a new climate projections report by Azim Premji University. The report, Indian Coastal Region: Climate Projections 2021-2040, stated that Mumbai's annual maximum temperature could reach 33.1degC by 2040. Summer wet-bulb temperatures, the heat plus humidity measure, and winter minimum temperatures are also expected to rise by 1.3degC over the next 15 years. The study further projected an 18% increase in average monsoon rainfall in Mumbai - from the current 1,749 mm to 2,049 mm by 2040 - raising concerns over flooding and extreme weather events in the city. The findings underline the urgent need for heat-resilient urban planning and climate adaptation measures, reports said. The study mapped climate risks across India's 11,000-km coastline and warned that nearly 40 coastal districts are likely to record summer temperature increases of over 1degC by 2040. Overall, India's average temperature is projected to rise by 1.5degC during the period.. The report also warned of rapidly rising sea surface temperatures, increasing at 0.27degC per decade, which could heighten the risk of intense tropical cyclones. Coastal regions in Kerala and Tamil Nadu are expected to experience dangerous summer wet-bulb temperatures nearing 31degC, posing serious health risks. "Getting air conditioned public transportation, setting up temporary shelters, spraying water from sprinklers etc may be reactive measures for coping with heatwaves. However, what needs be more immediate and critical is integration of climate knowledge in all public planning measures," said Santonu Goswami, associate director at the School of Climate Change and Sustainability, Azim Premji University....