India's summer season, which often results in unbearably hot days along the northern plains, saw just one instance of a significant heatwave across the country this year. This rare instance resulted in the coolest summer in the past 44 years, and fourth-coolest summer in recorded history.
Rainfall in May at 107.9 mm was also the second-highest since 1901, when the weather office started recording official data.
The average maximum temperature of 34.18C during this past summer season was 0.99C cooler than normal. It was the coolest summer since 1977, which saw an anomaly of 33.84C. The coolest summer since 1901 occurred in 1917, when average maximum temperature was 32.68C.
“Like in March and April 2021, heatwave conditions in May 2021 were occasional and also for shorter periods over very small region,” the India Meteorological Department said. The National Capital Delhi reported a max temperature of less than 40 degree Celsius in most of the dates of May 2021,” it added.
As per the IMD, the two cyclones on either coast (Tauktae and Yaas) formed during the second half of May were powerful enough to influence the northern parts of the country, bringing rainfall and cooler winds to states such as Rajasthan, UP, Delhi-NCR, Bihar and Jharkhand, which are susceptible to heatwaves.
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