As the port cities began to fall on Saturday morning, weather officials said Karachi could approve the rainfall for 36 to 40 hours.
City officials have urged people not to approach the trees and stay indoors in the rain.
According to the Bureau of Meteorology, the second case of the monsoon is stronger than the previous monsoon, leading to the destruction of the group and the canals that were hit by heavy rain in the city.
More than a dozen people have lost their lives in rain-related activities at international business sites and at least 20 million people worldwide.
The current system is expected to rain in the morning in Eid-ul-Azha.
The British Meteorological Agency said the weather was pleasant under the clouds on the second and third days of Eid al-Fitr.