Pakistan has four seasons : a cool , dry winter from December through February ; a hot , dry spring from March through May ; the summer rainy season , or southwest monsoon period , from June through September ; and the retreating monsoon period of October and November . There are four distinct seasons ; a cool , dry winter from December through February ; a hot , dry spring from March through May ; the summer rainy season or southwest monsoon period , from June through September ; and the retreating monsoon period of October and November .