NEW DELHI (Reuters) -Eastern India experienced its hottest April on record as a heatwave scorched parts of the country amid a general election, killing at least nine people, and the weather office on Wednesday forecast above normal temperatures for May too. The mean temperature in eastern India was 28.12 Celsius (82.61 Fahrenheit) in April, the warmest since records began in 1901, with experts blaming a combination of factors. "In an El Nino year, you get more heating," said Mrutyunjay Mohapatra, chief of the India Meteorological Department, referring to a climate pattern that typically leads to hot and dry weather in Asia and heavier rains in parts of the Americas.