Frozen precipitation in the form of ice crystals. Covers the Himalayas, Karakoram and Hindu Kush from December to March — vital for South Asian river systems.
BasicsWhat is Snow?
Snow is frozen precipitation in the form of ice crystals falling from clouds. Each snowflake is built from many tiny ice crystals that grow as water vapour deposits directly onto them at sub-freezing temperatures inside clouds. When the air column below the cloud stays below freezing all the way to the ground, the ice crystals reach the surface intact as snow. If parts of the column are above freezing, they may melt partially (sleet) or completely (rain).
For South Asia, snow is far from rare — it is the foundation of the region’s water security. Every winter, snow accumulates across:
- The Himalayas (Kashmir, Himachal, Uttarakhand, Sikkim, Arunachal, Bhutan, Nepal)
- The Karakoram (Gilgit-Baltistan, Hunza)
- The Hindu Kush (KP Pakistan, Afghanistan)
- The Tibetan Plateau (China)
This snowpack — combined with glacial melt — feeds the Indus, Ganga and Brahmaputra basins, on which over a billion people depend for water, irrigation, hydropower and ecosystem services. How much each river relies on that meltwater differs sharply: it is extremely important for the Indus, important for the Brahmaputra and plays only a modest role for the Ganga.
Where it snows in South Asia
India:
- Kashmir Valley (Srinagar, Gulmarg, Pahalgam) — heavy snow December–February
- Himachal Pradesh (Manali, Shimla, Dharamshala, Kullu) — moderate to heavy
- Uttarakhand (Auli, Mussoorie, Munsiyari, Chopta) — moderate
- Sikkim (Lachen, Lachung, Nathula) — moderate to heavy
- Arunachal Pradesh (Tawang, Sela Pass) — heavy
- Occasional snow flurries at very high passes in J&K, HP, UK
Pakistan:
- Gilgit-Baltistan (Skardu, Hunza, Khaplu) — heavy snowfall on the high ranges, though the valley floors themselves are dry
- KP northern areas (Naran, Kaghan, Swat valley) — heavy
- Murree, Galyat (Punjab/KP border) — moderate
- Quetta (Balochistan) — occasional
Nepal:
- High Himalayan districts (Solukhumbu, Mustang, Dolpa) — annual heavy snow
Bhutan:
- High passes and northern districts — annual moderate to heavy
Bangladesh & Sri Lanka:
- No snow (no high-altitude terrain)
Snowfall climatology
The Western Himalayas receive snow primarily from Western Disturbances — mid-latitude low-pressure systems originating over the Mediterranean or further east that traverse Iran and Afghanistan before depositing precipitation across Pakistan and northern India.
Typical snowfall season:
- November-December: First snowfall at higher elevations
- January-February: Peak season — heaviest accumulation
- March-April: Spring snowfall mixes with rain; thaw begins
- May-October: Snow-free except above ~4,500 m
Annual precipitation (rain and snow combined):
- Gulmarg, J&K: 1,449.2 mm total annual precipitation (all forms, not snow alone)
- Skardu, Pakistan: about 222 mm total annual precipitation (all forms, not snow alone)
- Shimla, HP: 1,487.3 mm total annual precipitation (all forms, not snow alone)
Snow tourism
Winter snow tourism is a major economic pillar:
- India: Manali, Shimla, Auli, Gulmarg, Sonmarg, Mussoorie attract millions annually.
- Pakistan: Naran-Kaghan, Murree, Hunza valley draw domestic and Gulf tourists.
- Nepal: High-altitude trekking continues year-round; winter trekking in Annapurna, Everest regions popular.
- Bhutan: Premium winter tourism via Druk Air with snow-rich destinations.
Recent seasons:
- Heavy snowfall near Manali just before Christmas 2024 stranded vehicles between Solang and the Atal Tunnel.
- Kashmir Valley had heavy December snow disrupting transport but boosting tourism.
Snow and climate change
Climate change is dramatically affecting Himalayan snow:
- Snow line is rising — minimum altitude of permanent snow has shifted upward.
- Snow season shortening — snow cover now lasts fewer days in parts of the Himalaya, though trends vary from region to region.
- Snow-to-rain ratio shifting — warmer winters produce more rain and less snow at given altitudes.
- Earlier spring melt — snow is melting earlier in parts of the western Himalaya, and models project that peak river flow will shift earlier.
- Increased GLOFs — accelerated melt forms unstable lakes that periodically burst.
Implications for downstream:
- River discharge will peak then decline as glaciers shrink (most expected to peak by 2050).
- Hydropower output threatened in Bhutan, Nepal, Pakistan, India.
- Irrigation for downstream farmers at risk.
Snow safety
For visitors to South Asian snow regions:
- Acclimatize gradually — high altitudes (above 3,500 m) require 1-2 day rest stops.
- Watch for avalanche zones — Manali-Rohtang, Sonmarg-Zojila, Skardu-Khaplu road sections.
- Carry warm clothing — temperatures drop to -10 to -30°C at higher elevations.
- Check weather forecasts — snowstorms can close roads and trap vehicles.
- Prepare for power cuts — heavy snow regularly disrupts electricity.
- AMS awareness — Acute Mountain Sickness can occur above 2,500 m.
- Frostbite risk — exposed skin can freeze within 30 minutes at a wind chill of -28°C or colder.
Frequently asked questions
Where can I see snow in India? Best snow viewing destinations: Gulmarg, Sonmarg, Pahalgam (Kashmir); Manali, Shimla, Auli, Mussoorie (HP/UK); Munsiyari, Chopta (UK); Nathula, Tsongmo Lake (Sikkim); Tawang, Sela Pass (Arunachal). Visit December–February for peak snowfall.
Does it snow in Delhi or Mumbai? Almost never. Delhi’s coldest January night sometimes drops to 3-4°C but the air is too dry and too warm for snow. Mumbai’s lowest temperature in modern records was 7.4°C in 1962. No major Indian plains city has recorded snowfall in 200 years.
When is the best time for snow trekking? For viewing snow: late December to early February. For trekking on snow (with proper gear): January-March. For spring snow with milder conditions: April-May (Roopkund, Sandakphu treks). For monsoon-free Himalayan trekking: October-November.
How does Himalayan snow affect downstream river flow? Snowmelt’s share of river flow differs sharply between basins: as much as 50% of annual flow in the far western (Indus area) Himalayan catchments, about 25% in the far eastern (Tsangpo, the upper Brahmaputra) catchments and under 20% elsewhere. Peak melt occurs May-July. Without sufficient winter snow, summer agriculture and hydropower face shortages. Snowmelt sped up by spring heatwaves partly fed the 2022 Pakistan floods, though extreme monsoon rain was the main cause.
Where can I check snow forecast for hill stations? Mausam Online shows precipitation forecasts (which include snowfall in snow regions) on every city page. See Srinagar, Shimla, Manali, Dharamshala, Mussoorie.