Brace for above-normal heatwave days between March and May | IMD summer forecast

More heatwave days are also likely to be witnessed across most parts of the country during the months.

The IMD declares a heatwave when the maximum is over 40°C in the plains, and also the temperature is 4.5 degrees Celsius or more above normal.

March-May season to see above-normal heat

During March to May season 2025, above-normal number of heatwave days are likely over most parts of the country except over northeast India, extreme north India and southwestern and southern parts of Peninsular India, the weather agency said.

Also Read | Delhi sees warmest Feb night in decades; Winter season to officially end around this day

The rainfall during March averaged over the country as a whole is also most likely to be normal, the weather agency said.

“Above-normal rainfall is likely over parts of Peninsular India and neighbouring regions of south of central India, while normal to below-normal rainfall is likely in the rest of the country,” the IMD said.

Earlier this month, heatwave conditions were experienced in coastal areas of Maharashtra—unusual for February.

Also Read | Why is Mumbai experiencing a heatwave in February?

The IMD attributed the unusual rise in temperature to a presence of strong easterly winds, which they said were blocking the cool sea breeze.

On January 18, HT highlighted how rising temperatures across India are blurring seasonal distinctions.

Analysis of IMD’s century-long temperature data shows the October-December post-monsoon season is warming at a rate of 1.01 degrees Celsius per century, followed by the January-February winter months at 0.73 degrees Celsius. Pre-monsoon (March-May) and monsoon (June-September) seasons are warming at relatively slower rates of 0.62 degrees Celsius and 0.45 degrees Celsius respectively.