Karachi receives an average of 200–250 mm of annual rainfall, mostly during the monsoon season
Karachi — Pakistan’s coastal city of Karachi typically receives between 200 and 250 millimeters of rainfall annually, most of which occurs during the monsoon season between July and September. The city’s weather remains predominantly hot and dry throughout the year, with rainfall concentrated in a few weeks of the summer months.
According to meteorologists, Karachi’s rainfall largely depends on the strength of monsoon winds and moisture-laden currents from the Arabian Sea. During this period, humidity levels rise significantly, sometimes leading to heavy downpours and urban flooding. However, in most years, rainfall remains within a moderate range.
Historical data shows noticeable variation in annual rainfall. For instance, Karachi recorded around 466 mm of rain in 2007 and approximately 484 mm in 2020. In average years, the city receives between 100 and 300 mm of rain.
Summers in Karachi are typically long and hot, while winters are short and dry. The spring and autumn seasons are brief and mild. Monsoon rains play a vital role in cooling temperatures and increasing atmospheric moisture, bringing temporary relief from the city’s intense heat.
Experts note that the city’s rainfall patterns depend on its geographical location, sea breezes, and pressure systems, which cause yearly fluctuations in both intensity and duration of rainfall.
In recent years, rapid urban development and climate change have made Karachi’s weather patterns increasingly unpredictable, with experts warning of further irregularities in future monsoon behavior.
