‘Below-normal rain, above-normal temperatures’ likely: Climate and weather outlook

August-September rain likely to be below normal, says IMD

The southwest monsoon staged a substantial recovery in July, but is expected to slow again through August and September, with below-normal rainfall — less than 94% of the long-period average — likely for the remainder of the season, the India Meteorological Department said on Friday.

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What It Means

These low pressure systems helped bring particularly good rainfall over central India,” he said, noting that Valsad in Gujarat recorded more than 1,000mm of rainfall in a single day during the month. Mohapatra attributed the recovery to a surge in low-pressure systems. “India saw four low pressure systems developing in July over the Bay of Bengal, out of which two intensified further into a depression.

“Despite a moderate El Nino, above normal low pressure system (LPS) days helped negate the effect somewhat,” he added.

Outlook

IMD director general M Mohapatra said above-normal maximum and minimum temperatures are also likely across most of the country in August, a month that is itself expected to see below-normal rainfall overall, at less than 94% of LPA. The season’s cumulative rainfall stood at -13% as of July 30 — a sharp improvement from -40% at the end of June. July itself recorded 283.3mm of rainfall nationally, 1% above the LPA of 280.5mm, reversing IMD’s own forecast for the month, which had projected rainfall at 94% of LPA.

The August forecast follows a marked turnaround in July.

Issuing its long-range forecast for the next two months at a press conference, IMD said El Niño conditions are expected to strengthen further in the coming months, which will weigh negatively on the monsoon’s second half.