During the period from last week of June when monsoon sets in over the capital, till mid-September the date when it retreats from the region, Delhi has garner 554.3 mm of rain against the normal rainfall of 672.9 mm. In the month of June, when Monsoon arrives, Delhi registered only 15.50 mm of rain against the normal rainfall of 54.9 mm. During July, Delhi got 110.4 mm of rain compared to the normal rainfall of 231.5 mm.
The month of August and September saw revival of monsoon in the country and Delhi too received the major amount of rainfall during these months. In August, the national capital recorded a massive 363.20 mm of rain against the normal rainfall of 258.7 mm. In September too, rains keep on lashing the capital, giving it 127.8 mm of rain above the normal of 55.20 mm. But in spite of excessive rain during the later months of the monsoon season, Delhi failed to make up for the scarcity it carried throughout June and July.