New Delhi: March and April were the hottest months in the past 100 years and May has also been warmer than normal with severe heat conditions prevailing in many parts of north India, the IMD said.
In its weekly forecast report, the Indian Meteorological Department said its preliminary analysis of data indicates that mean monthly temperature of March and April are the highest during the last 100 years.
"The month of May has also been warmer than normal with severe heat wave conditions prevailing in many parts of Rajasthan, Madhya Pradesh, Vidarbha and heat wave conditions in remaining parts of northwest and central India," the IMD said.
Most parts of north India, including Delhi, have been experiencing intense heat conditions for the past two months and maximum temperature has crossed 45 degree Celsius on many ocassions.
It said this summer has been severe with heave wave conditions prevailing over many parts of northwest and central India.
The IMD analysis comes close on the heels of NASA saying global temperatures have been steadily rising since the late 1970s with no significant let-up in the trend.
The draft paper released by NASA says the overall warming trend has held through this decade.
"We conclude that global temperature continued to rise rapidly in the past decade... That there has been no reduction in the global warming trend of 0.15-0.20 degrees Celsius per decade that began in the late 1970s," the report said.
Last year, the maximum temperature in April had touched 43.5 degrees C which was the second highest in the last 65 years. The all-time record for April was recorded on the 29th day in 1941 when the mercury touched 45.6 degrees C.
This March also saw unusually hot days, which the MeT Department said was the second warmest March for the city since 1901.
The mercury had touched 39.2 degrees C on March 21 which was the second highest maximum temperature in March in the past 65 years.
The mean maximum temperature of March 2010 (33.8 C) was the second highest only behind 1953 (34.3 C).
Similarly the mean temperature (average of mean maximum and mean minimum temperatures) of 26.2 C for March 2010 was second highest behind 26.4 C for March 1953.