The progress of rains is expected to be slow over the next few days and it is expected to spread over central and eastern India only after Tuesday.
By Saturday, monsoon rain had covered much of Kerala, Tamil Nadu and parts of Karnataka in the south and till Assam in the northeast.
Had the progress been normal, the rain by this time would have reached central India and covered Maharashtra, parts of Gujarat, Madhya Pradesh, eastern Uttar Pradesh, Bihar, Jharkhand and West Bengal.
“The southwest monsoon, as expected, arrived late in the country and thereafter its progress has been rather sluggish.
"With no strong push seen in the next week to 10 days, rain is expected to make a slow march towards the north,” Ajit Tyagi, former director-general of India Meteorological Department told Business Standard.
He said the progress over central and northern India could be delayed due to late onset.
The southwest monsoon was 47 per cent below normal between June 1 and 14, with large parts of central, northern and western India yet to get their first showers.
This year, it arrived in India on June 6, five days behind its usual date of June 1.
In 2009, the previous time when El Niño (a weather phenomenon that causes less rains) had led to a big drop in rain, the southwest monsoon had arrived over Kerala on May 23 -- nearly a week before the normal date.
Thereafter, there was a prolonged hiatus in the advance of the rain in June but it picked up pace in July, covering the entire country by July 3, well before its normal date of July 15.
The rains stayed back for a longer duration and withdrawal had started from September 25 against the normal date of September 1.
The stop-start monsoon had led to the worst drought in almost 30 years, hitting almost 120 districts.
In 2014, the pattern could follow a similar situation, barring the onset date.
The IMD in its second-stage forecast on June 9, a few days after the onset, had estimated the rain at 93 per cent of the 50-year average from 1950 (termed LPA, the long period average), lower than the 95 per cent it had projected in April, both considered sub-normal.
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