As Mumbaikars experienced soaring temperature levels, the IMD declared a heatwave in the financial capital on Saturday. The weather department had also issued a heatwave warning for all of Konkan, including Mumbai on Sunday. The main observatory in Santacruz recorded 39.4 degree Celsius and Colaba reported 37.4 degree Celsius. Presence of strong easterly wind delaying the sea breeze is said to be the reason for this heatwave. Summer in Mumbai lasts from March to June which is typically humid with temperatures ranging from 30 to 35 degree Celsius. The current heatwave has gotten residents worried for the next two months.