There are three main seasons through the year: a cool season between October and February (with dry days and cool nights), a hot season from March to June (warm and humid), and a distinctly wet season from July to September. Tis varies from region to region.
May to October is peak trekking season, as the area faces little to no snow rainfall during this time. It's also a lively time due to the summer holidays.
November to April is the best time to travel in Pakistan if you want to travel to the south or in the west. These are the areas where the winter weather will be pleasant and in summer it's too hot.