Climate

In Karachi, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year. The clearer part of the year in Malir begins around the first week of the month of September and lasts for 9 months, ending around the second week of June every year. The cloudiest month of the Malir district in July, during which on average the sky is overcast or mostly cloudy (52 % of the time)

The rainy period of the year lasts for 2.7 months, starting from June 25 and ending on September 15, with a sliding 31-day rainfall of at least 0.5 inches. Like Karachi city, the month with the most rain in Karachi in August, with an average rainfall of 1.3 inches.

The rainless period of the year lasts for 9.3 months, from September 15 to June 25. The month with the least rain in Malir is May, with an average rainfall of 0.0 inches.

The length of the day in the Malir district varies over the course of the year. In 2021, the shortest day was December 22, with 10 hours, and 35 minutes of daylight; the longest day remained June 21, with 13 hours, and 41 minutes of daylight.

The earliest sunrise is at 5:41 AM on June 10, and the latest sunrise is 1 hour, 37 minutes later at 7:18 AM on January 13. The earliest sunset remained at 5:41 PM on November 29, and the latest sunset is 1 hour, 44 minutes later at 7:25 PM on July 2.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Like Karachi city, the Malir district also experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.8 months, from March 15 to November 9, during which time the comfort level is muggy, oppressive, or miserable at least 27% of the time. The month with the muggiest days are July, with 31.0 days that are muggy or worse.

The month with the fewest muggy days is January, with 0.9 days that are muggy or worse

The average hourly wind speed in Karachi experiences significant seasonal variation over the course of the year. The windier part of the year lasts for 5.1 months, from April 14 to September 18, with average wind speeds of more than 10.8 miles per hour. The windiest month of the year in Malir is June, with an average hourly wind speed of 14.5 miles per hour.

The calmer time of year lasts for 6.9 months, from September 18 to April 14. The calmest month of the year is November, with an average hourly wind speed of 6.9 miles per hour.

To characterize how pleasant the weather is in district Malir throughout the year, we compute two travel scores. The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Karachi and distinct Malir for general outdoor tourist activities is from mid-November to mid-March, with a peak score in the first week of February.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Karachi and Malir for hot-weather activities are from early March to mid-April and from early October to mid-November, with a peak score in the last week of October.