The National Disaster Management Authority (NDMA) of Pakistan said in a report on Friday that South Sindh province was the worst hit where 34 people were killed and nine others injured in the rain-related incidents.
Authorities said 24 houses were also damaged in the downpour.
Meanwhile, Chief Minister of Sindh Syed Murad Ali Shah told a press conference on Friday that 80 people were killed in rains in the province with 47 fatalities in provincial capital Karachi alone.
He said 604 mm rainfall was recorded in Karachi during August, breaking years-long record of heavy rains in the city during the month.
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A total of 29 people were killed, and a same number of others injured with 196 houses being destroyed in the northwest Khyber Pakhtunkhwa province, the NDMA said, adding that two bridges and three mosques were also swept away by the waters gushing through the residential areas, roads and open fields.
The rains caused a disastrous situation in southwest Balochistan province where scores were left homeless after their houses were swept away by flashfloods triggered off by lashing rains.
The NDMA said that 15 people were killed, seven others injured and 907 houses damaged in the pouring rains.
In east Punjab province, north Gilgit-Baltistan region and Pakistan-controlled Kashmir, 12, 10 and six people were killed in accidents caused by the rains, respectively. About seven people were also injured in the areas, the authority said.
The NDMA has provided 10,985 tents, 409.6 tons of food items, 2,956 blankets, 2,200 mosquito nets, 2,350 plastic mats, 2,000 tarpaulins and 222 dewatering pumps in the affected areas.
The monsoon winds are the major source of downpour in the country during the months of July-September. The rains also caused destruction in the country almost every year, inundating low-lying areas and sweeping away the houses located near river banks.
This year, the meteorological department forecasted more than usual rains during the ongoing season, and the concerned departments issued advisories for the general public to take self-precautionary measures during the season.