Weather in Pakistan can be divided into three three seasons: cool (autumn to winter, around October to February), hot (spring to summer, around March to June) and wet/monsoon (summer, around July to September). There are, however, distinct regional variations. Whichever season you travel, the 'continental' climate can mean big day-to-night temperature differences. Weather conditions in Karachi and Sindh are perhaps best around November to February (although it can get chilly at night), but the region is often unbearably hot in the summer.
The monsoon sweeps in from around July through September, bringing bouts of heavy rain, thunderstorms and oppressive sauna-like humidity. In 2006 in Karachi about 24 people died in unusually heavy monsoon conditions, which caused widespread damage to the city. Needless to say, Karachi is not the place to be in monsoon season.
| Low temp (°C) | High temp (°C) | Sunshine (hours) | Rainfall (mm) | Humidity (am) | Humidity (pm) | |
|---|---|---|---|---|---|---|
| Jan | 12 | 24 | 0 | |||
| Feb | 15 | 26 | 1 | |||
| Mar | 20 | 30 | 1 | |||
| Apr | 24 | 32 | 0 | |||
| May | 27 | 33 | 0 | |||
| Jun | 28 | 33 | 1 | |||
| Jul | 28 | 31 | 8 | |||
| Aug | 27 | 30 | 5 | |||
| Sep | 26 | 31 | 2 | |||
| Oct | 23 | 33 | 0 | |||
| Nov | 18 | 30 | 0 | |||
| Dec | 13 | 26 | 0 |
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