Pakistan spans five climate zones from the Arabian Sea coast at 0 meters elevation to K2 at 8,611 meters. The Pakistan Meteorological Department divides the country into four principal climatic regions: the coastal strip along the Arabian Sea where Karachi sits, the Indus Plain covering Punjab and Sindh provinces, the mountainous north including Gilgit-Baltistan and Khyber Pakhtunkhwa, and the arid Balochistan Plateau. No single season offers ideal conditions nationwide. Karachi experiences peak temperatures of 44°C in May while Skardu records -20°C the same month. The country receives monsoon rains from July through September in the east, winter precipitation from December through March in the north, and almost no rainfall year-round across Balochistan. Annual rainfall in Islamabad averages 1,143 millimeters, Lahore receives 628 millimeters, Quetta receives 239 millimeters, and Karachi receives 167 millimeters. Tourism infrastructure operates year-round in major cities but follows distinct seasonal patterns in mountain regions where the Karakoram Highway closes from November through April and Hunza Valley hotels shut completely from December through February.
March through May constitutes spring across most of Pakistan. Temperatures in Islamabad range from 15°C to 30°C in March, climbing to 22°C to 37°C by May. Lahore experiences similar patterns with May afternoon temperatures regularly exceeding 40°C. The Indus Plain becomes progressively hotter through spring with Multan and Bahawalpur reaching 43°C to 45°C in May. Karachi remains relatively moderate with March temperatures of 20°C to 32°C, though humidity increases through April and May. Spring brings almond and apricot blossoms to Hunza Valley in late March and early April, drawing photographers to Baltit Fort and Altit Fort when orchards bloom against snow-covered peaks. The Shandur Pass opens in April, though snow lingers and temperatures stay near freezing at night at 3,738 meters elevation. Fairy Meadows becomes accessible in April when the jeep track from Raikot Bridge clears. Spring precipitation falls heaviest in the north where Islamabad and Rawalpindi receive 100 to 150 millimeters monthly in March and April. The Swat Valley and Kaghan Valley receive snow at higher elevations through April. Chitral Valley sees apple blossoms in April. Deosai National Park remains snowbound until late May when the plateau opens to vehicles. Air quality in Lahore deteriorates through March and April as agricultural burning combines with industrial emissions, with the Air Quality Index frequently exceeding 150.
June through August forms the summer period. The Indus Plain becomes nearly uninhabitable with sustained temperatures above 40°C. Lahore averages 33°C to 40°C in June, climbing to 31°C to 39°C in July and August as monsoon clouds provide slight relief. Jacobabad and Sibi in interior Sindh and Balochistan routinely record Pakistan's highest temperatures, reaching 52°C in May 2010 and 53°C in May 2017. Karachi experiences high humidity during summer with feels-like temperatures exceeding actual readings of 32°C to 36°C. The monsoon reaches Lahore and Islamabad in late June or early July, continuing through September. Monsoon rainfall in Lahore averages 200 millimeters in July and 235 millimeters in August. Islamabad receives 300 millimeters in July and 290 millimeters in August. Roads to Neelum Valley become hazardous during monsoon with landslides closing sections for hours or days. The northern mountain areas offer refuge from heat with Gilgit recording 24°C to 35°C in July, Skardu reaching 15°C to 29°C, and Hunza Valley maintaining 18°C to 30°C. The Karakoram Highway remains open through summer except during occasional landslides. Attabad Lake formed in 2010 after a landslide, creating a new tourism destination that reaches peak accessibility in July and August. Saiful Malook Lake near Naran becomes crowded on summer weekends with domestic tourists. Margalla Hills trails around Islamabad see heavy use early mornings before heat intensifies. K2 climbing season runs from June through August when weather windows open, though only 377 people had successfully summited by end of 2022 compared to over 6,000 on Everest.
September through November constitutes autumn. Temperatures decline gradually across the Indus Plain with Lahore cooling from 30°C to 38°C in September to 18°C to 30°C in November. Monsoon rains cease in Punjab and Khyber Pakhtunkhwa by late September. Karachi experiences its most moderate weather with October temperatures of 24°C to 34°C and minimal rainfall. Smog engulfs Lahore beginning in late October and persisting through January, with the Air Quality Index regularly exceeding 300 and occasionally surpassing 500. Agricultural stubble burning in Indian Punjab and Pakistani Punjab combines with vehicular emissions and industrial output, reducing visibility below 500 meters on many days. The government closes schools periodically during November when readings exceed 400. Islamabad experiences less severe air quality degradation due to its proximity to Margalla Hills National Park and lower population density. Hunza Valley displays autumn colors in October when poplar trees turn gold against the Karakoram Range. The Karakoram Highway begins closing sections in late November depending on snowfall. Skardu flights become unreliable in November as weather conditions deteriorate, with Pakistan International Airlines canceling 30 to 50 percent of scheduled departures some weeks. Chitral becomes difficult to reach once snow closes Lowari Pass, though the Lowari Tunnel completed in 2017 provides year-round road access. Deosai National Park closes in mid-November when snow accumulation makes the plateau impassable. Nanga Parbat base camp treks continue through October. The Kalash valleys of Bumburet, Rumbur, and Birir celebrate the Chaumos winter solstice festival in December, attracting anthropologists and tourists to witness pre-Islamic traditions maintained by the approximately 4,000 remaining Kalash people.
December through February forms winter. Islamabad and Rawalpindi experience cold mornings of 2°C to 4°C with afternoon temperatures reaching 15°C to 18°C. Lahore sees similar patterns with dense fog reducing visibility below 100 meters on many winter mornings, causing highway accidents and flight delays. Karachi remains mild with December and January temperatures of 12°C to 25°C, making winter the prime tourist season for the coast. Gwadar on the Makran Coast maintains even more moderate conditions with winter lows rarely dropping below 15°C. The northern mountains receive heavy snowfall from December through February. Murree, located 50 kilometers from Islamabad at 2,291 meters elevation, becomes crowded on winter weekends when snow falls, though the hill station experiences traffic congestion with vehicles stranded for hours on the single access road. Nathia Gali in Abbottabad District receives more snow and less crowding. Malam Jabba in Swat Valley operates Pakistan's primary ski resort from December through March with five ski runs and a vertical drop of 262 meters, though infrastructure remains limited compared to alpine resorts. The Khunjerab Pass at 4,714 meters closes completely from November through April, halting overland travel between Pakistan and China. Gilgit records winter temperatures of -4°C to 10°C. Skardu experiences -15°C to 5°C with most hotels closed and flights operating sporadically. Shigar Fort near Skardu remains open year-round but receives few visitors in winter. The Hunza Valley becomes isolated when snow accumulates, though some guesthouses in Karimabad stay open for winter trekkers. Khaplu Palace in Ghanche District operates through winter with heating. Hingol National Park in coastal Balochistan offers winter hiking with minimal precipitation and temperatures of 10°C to 22°C. The shrine of Lal Shahbaz Qalandar in Sehwan Sharif holds annual urs celebrations in Shahban, the eighth month of the Islamic calendar, drawing hundreds of thousands of pilgrims regardless of weather. Lahore sees increased domestic tourism during winter school holidays in late December and early January, filling hotels near Badshahi Mosque, Lahore Fort, and Data Darbar.