The heat wave is expected to spread over more parts of north and central India, including the national capital, in the next five days but the conditions are likely to gradually subside during the remaining part of the month. According to the India Meteorological Department (IMD), heat wave conditions are already prevailing over parts of Rajasthan, Madhya Pradesh, Vidarbha and Telangana. "These conditions are likely to spread over to some more areas comprising parts of Uttar Pradesh, Haryana, Chandigarh, Delhi, Gujarat and north Madhya Maharashtra during May 17-21. They are likely to abate gradually during the remaining part of May," the IMD said in its forecast. Several parts of the country are reeling under intense heat. The MET department has already predicted a delay of six days for the onset of monsoon this year. However, several areas of Tamil Nadu, Kerala and south interior Karnataka are expected to get a good amount of rainfall owing to a depression. This will bring some relief to the states.