The question every traveler asks before booking a flight to Kathmandu is the same: when should I go? The answer depends entirely on what you want to do, where you want to go, and how much rain you are willing to tolerate. Nepal's weather is not one story. It is twelve different stories, shaped by altitude, monsoon patterns, and the massive wall of the Himalayas that divides the country's climate into distinct zones.
This nepal weather month by month guide breaks down temperatures, rainfall, visibility, and recommended activities for every month of the year. Whether you are planning a high-altitude trek, a cultural tour of the Kathmandu Valley, or a wildlife safari in the lowland Terai, knowing what the weather will do is the difference between a trip that works and one that does not.
Understanding Nepal's Climate Zones
Before diving into the monthly breakdown, it helps to understand that Nepal has three distinct climate zones stacked on top of each other:
- The Terai (75-300m): Subtropical lowlands along the southern border. Hot and humid in summer, mild in winter. Chitwan and Bardia national parks sit here.
- The Middle Hills (300-3,000m): Temperate zone including Kathmandu (1,400m) and Pokhara (827m). Four distinct seasons with moderate rainfall.
- The Himalayas (3,000m+): Alpine to arctic conditions. Temperatures drop sharply with altitude. Snow is common above 4,000m from November through March.
The numbers in this guide focus primarily on the Middle Hills zone (Kathmandu and Pokhara) since that is where most travelers spend the majority of their time, with notes on trekking conditions at higher elevations.
January: Cold, Clear, and Quiet
Kathmandu: Highs 19C / Lows 2C | Rainfall: 15mm
Pokhara: Highs 20C / Lows 7C | Rainfall: 25mm
January is Nepal's coldest month. In Kathmandu, morning fog blankets the valley until mid-morning, and temperatures at night drop near freezing. The skies above the fog layer are often brilliantly clear, making this an excellent month for mountain views from Nagarkot and Sarangkot.
Trekking is possible in the lower hills (Poon Hill, Ghorepani) but high-altitude routes like the Everest Base Camp trek are extremely cold. Passes above 5,000m may be snow-blocked. The Terai is pleasant and warm, making January ideal for wildlife safaris in Chitwan.
Best activities: Kathmandu Valley cultural tours, Chitwan safari, short low-altitude treks, Nagarkot sunrise viewing.
February: The Thaw Begins
Kathmandu: Highs 21C / Lows 4C | Rainfall: 18mm
Pokhara: Highs 22C / Lows 8C | Rainfall: 30mm
February brings a gradual warming trend. The fog becomes less persistent, afternoon sunshine grows stronger, and the first hints of spring appear in the rhododendron forests. Late February is when experienced trekkers begin heading to the Annapurna and Everest regions to beat the spring crowds.
Mountain visibility is generally good, though occasional winter storms can bring brief cloud cover at higher elevations. This is the last month of low-season pricing at hotels and teahouses throughout the country.
Best activities: Early-season trekking, birdwatching (migration season begins), Kathmandu Valley exploration, Terai wildlife viewing.
March: Spring Arrives
Kathmandu: Highs 25C / Lows 8C | Rainfall: 35mm
Pokhara: Highs 27C / Lows 11C | Rainfall: 40mm
March marks the official start of Nepal's spring trekking season. Temperatures climb noticeably, the rhododendrons begin blooming at lower elevations, and the high passes become accessible again. This is when the trekking trails start filling up with travelers from around the world.
In Kathmandu and Pokhara, days are pleasantly warm and evenings are cool but comfortable. The occasional afternoon shower hints at the coming monsoon but does not disrupt plans. Mountain visibility is good, especially in the first half of the month before haze builds.
The Holi festival typically falls in March, filling Kathmandu's streets with color and celebration.
Best activities: Trekking (all regions open), Poon Hill trek for rhododendrons, cultural festivals, photography.
April: Peak Spring Season
Kathmandu: Highs 28C / Lows 12C | Rainfall: 60mm
Pokhara: Highs 30C / Lows 14C | Rainfall: 65mm
April is one of the best months to visit Nepal for trekking. The weather is warm but not yet hot, the rhododendrons are in full bloom between 2,500-3,500m creating tunnels of red and pink along the trails, and the Himalayan visibility remains strong.
The Annapurna Circuit trek is at its best in April. The Thorong La pass (5,416m) is reliably open, temperatures at altitude are manageable, and the lower sections of the trail are lush and green. Everest region treks are also in prime condition.
In the cities, temperatures can push above 30C in the afternoons. Rain showers become more frequent but remain brief and localized. Tourist infrastructure is running at full capacity, so book teahouse accommodation in advance on popular trails.
Best activities: High-altitude trekking, Annapurna Circuit, Everest Base Camp, peak climbing, rhododendron viewing, Kathmandu sightseeing.
May: The Heat Before the Storm
Kathmandu: Highs 30C / Lows 16C | Rainfall: 130mm
Pokhara: Highs 31C / Lows 18C | Rainfall: 150mm
May is Nepal's hottest and most humid month before the monsoon. The Terai becomes oppressively hot, Kathmandu feels heavy and sticky, and afternoon thunderstorms become a daily occurrence. Mountain visibility deteriorates as haze and cloud build throughout the day.
Trekking is still possible but less comfortable. Early mornings offer clear views, but by midday clouds typically obscure the peaks. The trails are quieter than April, which appeals to some travelers. This is also the month when Everest climbers make their summit bids from the north and south sides.
Pre-monsoon storms can bring heavy rain and occasional hail. Travel in the hills can be delayed by landslides on unpaved roads.
Best activities: Early-morning treks, Everest Base Camp (departing early April to finish by late May), budget travel (low-season pricing begins).
June: Monsoon Arrives
Kathmandu: Highs 29C / Lows 19C | Rainfall: 250mm
Pokhara: Highs 30C / Lows 20C | Rainfall: 450mm
The monsoon typically arrives in the first or second week of June, and everything changes. Rain falls daily, sometimes for hours at a stretch. Rivers swell, leeches appear on forest trails, and the mountain views vanish behind thick cloud cover for weeks at a time.
Most travelers avoid Nepal in June, and the tourism industry slows dramatically. Flights to Lukla become unreliable due to cloud and fog. Road conditions in the hills deteriorate. However, the landscape turns an extraordinary shade of green, and the cultural life of Nepal continues uninterrupted.
Best activities: Cultural tours in Kathmandu (temples and museums are uncrowded), rain shadow treks in Upper Mustang and Dolpo, budget accommodation deals.
July: Peak Monsoon
Kathmandu: Highs 28C / Lows 20C | Rainfall: 385mm
Pokhara: Highs 29C / Lows 21C | Rainfall: 550mm
July is the wettest month of the year, with the heaviest rainfall concentrated in the Pokhara region and along the southern slopes of the Himalayas. Kathmandu receives roughly 385mm of rain, and Pokhara can receive over 550mm. Flooding in the Terai is common, and landslides occasionally close mountain roads.
The heat is tempered by the rain, so temperatures actually drop slightly from May. The air is thick with moisture, and everything feels damp. The rice paddies in the Middle Hills are flooded and being planted, creating vivid green terraces.
Best activities: Upper Mustang trek (rain shadow region), monastery visits, Kathmandu cultural immersion, yoga and meditation retreats.
August: The Green Intensity
Kathmandu: Highs 28C / Lows 20C | Rainfall: 350mm
Pokhara: Highs 29C / Lows 21C | Rainfall: 500mm
August continues the monsoon pattern with slightly less total rainfall than July. The landscape is at peak green, waterfalls cascade from every hillside, and the rivers run high and brown with sediment.
The festival season begins in late August with Teej, a celebration where women across Nepal fast, dance, and pray for marital happiness. The streets of Kathmandu fill with women in red saris, and the energy is contagious. Gai Jatra (Cow Festival) also falls in August, a colorful celebration with processions and humor honoring those who passed away during the year.
Best activities: Festival experiences, Upper Mustang, photography (the landscape is at its most dramatic), budget deals on accommodation and flights.
September: The Monsoon Fades
Kathmandu: Highs 28C / Lows 18C | Rainfall: 200mm
Pokhara: Highs 29C / Lows 19C | Rainfall: 300mm
September is the transition month. The monsoon weakens through the month, with rain becoming less frequent and less intense, especially in the second half. By late September, clear days begin to outnumber rainy ones, and the mountains start emerging from the clouds.
The major festival of Dashain, Nepal's longest and most important celebration, typically begins in late September or early October. It is a magnificent time to be in Nepal, as the entire country shifts into a festive mood, workplaces close, and families gather.
Experienced trekkers who start routes in late September often enjoy empty trails and improving conditions before the October rush begins.
Best activities: Festival immersion (Dashain preparations), early-season trekking for those who tolerate some rain, Kathmandu cultural tours.
October: The Golden Month
Kathmandu: Highs 27C / Lows 13C | Rainfall: 50mm
Pokhara: Highs 28C / Lows 14C | Rainfall: 55mm
October is the single best month to visit Nepal for most travelers. The monsoon has ended, the air is washed clean, the Himalayan visibility is at its peak, and temperatures at every elevation are comfortable. This is the month when you can stand at Poon Hill, Sarangkot, or Kala Patthar and see mountains stretching to the horizon in every direction.
Every trekking route in the country is in prime condition. The Everest Base Camp trek, Annapurna Circuit, Langtang Valley, and Manaslu Circuit all deliver their best experiences during October. The Tihar festival (Festival of Lights) usually falls in late October or early November, adding another layer of cultural richness.
The trade-off is crowds. October is peak season. Trails, teahouses, and flights to Lukla are at capacity. Book well in advance.
Best activities: Trekking (every route), peak climbing, festivals (Dashain and Tihar), photography, paragliding in Pokhara, wildlife safari.
November: The Crystal Window
Kathmandu: Highs 23C / Lows 7C | Rainfall: 8mm
Pokhara: Highs 24C / Lows 9C | Rainfall: 10mm
November offers the clearest skies of the year with almost zero rainfall. The temperatures have cooled from October, making trekking at altitude more comfortable (though nights are colder). This is the month that serious trekkers and photographers prioritize because the mountain views are unmatched.
The festival season wraps up with Chhath Puja and various smaller celebrations. The tourist crowds thin slightly compared to October, especially in the second half of the month, creating a sweet spot of great weather and manageable trail traffic.
Best activities: Trekking (all routes, slightly fewer crowds than October), Kathmandu Valley sightseeing, sunrise viewpoints, photography.
December: Winter Returns
Kathmandu: Highs 20C / Lows 3C | Rainfall: 3mm
Pokhara: Highs 21C / Lows 5C | Rainfall: 5mm
December brings cold, clear days and the beginning of winter. In Kathmandu, mornings are foggy and cold, but afternoons warm to a comfortable level under blue skies. Mountain visibility remains excellent on clear days, and the tourist crowds have largely departed.
High-altitude trekking becomes challenging due to cold temperatures and potential snow on passes above 4,500m. Short treks in the Annapurna foothills (Poon Hill trek) remain feasible with proper cold-weather gear.
December is peak season for the Terai. Chitwan and Bardia are warm, dry, and ideal for jungle safaris. The reduced vegetation makes wildlife easier to spot.
Best activities: Terai wildlife safaris, short treks with warm gear, Kathmandu Valley tours, Christmas and New Year celebrations in Thamel.
Planning Your Trip Around Nepal Weather
The nepal weather guide above points to two clear optimal windows: October-November (post-monsoon) and March-April (pre-monsoon). These months combine the best weather, the best visibility, and the widest range of available activities.
If you are flexible with timing, our recommendation is:
- Trekking: October or April for ideal conditions
- Cultural immersion: September-October for Dashain and Tihar festivals
- Wildlife safari: December-March for warm, dry Terai weather
- Budget travel: June-August for the lowest prices, if you accept monsoon rain
For personalized trip planning based on your preferred month and activities, check our best time to visit Nepal guide or contact our team directly. We build itineraries around weather windows to maximize every day of your trip.
Nepal does not have a bad month. It has months that are perfect for some things and challenging for others. The key is matching your plans to the season, and this nepal weather month by month guide gives you the information to do exactly that.
