Best Time to Visit Kathmandu (2026–27): Month-by-Month Weather, Festivals, Air Quality & Crowds

Updated October 2026 · Written from Kathmandu · Climate figures from 1991–2020 Kathmandu Airport normals · Heights in feet

Most guides answer “when should I go to Kathmandu?” with one word: autumn. That is a good start, but it leaves out the things that actually shape a trip here – the week the whole city shuts for Dashain, the winter haze that hides the mountains you flew in to see, the hailstorms of late April, and the monsoon months when hotel rates fall and the valley turns emerald green.

This guide is written by people who live in Kathmandu. It combines long-term climate data, Nepal Tourism Board arrival numbers, official 2026 holiday dates and air-quality research with what we see on our own streets every month, so you can pick the best time to visit Kathmandu for your kind of trip – not just the average tourist’s.

Best Time to Visit Kathmandu at a Glance

Kathmandu sits in a bowl-shaped valley at about 4,600 ft, so it escapes both the heat of Nepal’s lowlands and the cold of the mountains. You can visit in any month. What changes is rain, visibility, air quality, crowds and what’s happening on the streets. We scored each month on all five.

Our overall rating for visiting Kathmandu, by month (out of 10)

Our editorial score combining rainfall, sky clarity, air quality, crowds and festivals. Dark green = best; red = toughest. Your own score will shift with your priorities – see best time by type of trip.

Kathmandu Weather by Month: The Real Numbers

Competing guides disagree wildly on Kathmandu’s rainfall because many use coarse global models. The figures below are 1991–2020 climate normals from observations at Kathmandu’s Tribhuvan International Airport (4,386 ft), published by Climate-Zone. Remember that monsoon totals swing a lot from year to year.

Daily temperature range by month

Each bar runs from the average night-time low to the average daytime high, on a 0–32°C (32–90°F) scale. Note the big day-night swing in winter: a 66°F afternoon can be followed by a near-freezing night.

Average monthly rainfall in Kathmandu

Source: 1991–2020 normals, Kathmandu Airport station. About 70% of the year’s rain falls between June and September. Most of October’s total usually lands in the first half of the month.

Kathmandu climate table

Kathmandu Season by Season

Locals describe six seasons (ritu), but for planning a trip, four work best. Here is what each one is really like on the ground.

Autumn (late September to November): the best season

Once the monsoon withdraws, rain washes the dust out of the air and the sky turns a deep blue. From mid-October the snow peaks of the Langtang and Ganesh Himal ranges can often be seen from rooftops and from hill viewpoints such as Nagarkot (about 7,100 ft). This is also festival season: the 15-day Dashain festival and the five-day Tihar “festival of lights” both fall in October and November.

Winter (December to February): sunny, cold and quiet

Winter in Kathmandu is surprisingly pleasant during the day – dry, sunny and often in the high 60s°F. The catch is the mornings and nights, which hover just above freezing, and the haze that builds as the season goes on. December still offers clear mountain views on many mornings; by January and February, smog and temperature inversions often hide them. Crowds thin out and hotel deals appear, and in February or March Tibetan New Year (Gyalpo Losar) fills Boudhanath with families in traditional dress.

Spring (March to May): warm, blooming and hazy

Spring is the second-best season. March and April are warm, rhododendrons bloom on the hills around the valley, and Bisket Jatra in Bhaktapur marks Nepali New Year in mid-April with huge chariot processions. The downsides are rising haze, which often blurs mountain views by April, and afternoon thunderstorms, sometimes with hail, that become common from late April. May is hot and sticky by Kathmandu standards and works best as a short city stop before or after a high-altitude trek.

Monsoon (June to mid-September): green, cheap and unpredictable

The monsoon is not non-stop rain. In Kathmandu it usually falls in heavy bursts, often in the afternoon or overnight, with drier windows in between. Temples and Durbar Squares are uncrowded, the paddy fields at the valley edges are an intense green, and the rain clears the air better than any other season. But mountain views largely disappear, roads out of the valley can be blocked by landslides, and domestic flights face delays. Gai Jatra and Krishna Janmashtami bring colour to the city in August and early September.

Month-by-Month Planner for Kathmandu

Kathmandu Festival Calendar 2026–27

Nepali festivals follow the lunar Bikram Sambat calendar, so their Western dates move every year – a detail most “best time” guides skip. The 2026 dates below come from the Ministry of Home Affairs public holiday list for 2083 BS (summarised by Pradhan & Associates). For 2027, we give the expected month; always confirm exact days once the official calendar is out.

2027 Dashain dates are based on the Drik Panchang calendar; Nepal’s official calendar committee may differ by a day.

Want to understand what you’re seeing? Read our explainer on how Dashain is celebrated, look at the rangoli designs families make for Tihar, or learn what people say to each other on the last day of Tihar in our collection of Bhai Tika wishes.

Air Quality: The Factor Most Kathmandu Guides Skip

Almost every competing guide calls winter and spring “good” months without mentioning that they are also Kathmandu’s smoggiest. The valley’s bowl shape traps dust, traffic exhaust and smoke under cold winter air. Research published in Nepal’s JNMA journal found pollution highest from roughly January to April and lowest in June to August, when monsoon rain washes the air.

Average PM2.5 in the Kathmandu Valley by season (µg/m³)

Seasonal values from a 2025 Mahidol University study of Kathmandu Valley PM2.5; year-round average from a 2026 study using seven government monitoring stations. Even the cleanest season is well above the WHO guideline.

What this means for your trip:

• Clearest air with dry weather: from late September through November, just after the monsoon.
• Haziest months: December to April. Mountain views from the city get rarer as winter goes on.
• If you have asthma or heart or lung conditions, autumn is the safest dry-season choice. Check a live AQI app each morning and carry a well-fitting N95-type mask for busy roads like the Ring Road.
• Mornings are clearer than afternoons for views, but smog is often thickest in the early morning in winter, before the sun breaks the inversion.

Crowds and Prices: When Kathmandu Is Busiest

Nepal welcomed 1,158,459 international tourists in 2025, and October was the busiest month with 128,443 arrivals, according to Nepal Tourism Board figures reported by Himal Press. Since almost every visitor passes through Kathmandu, these numbers are a good guide to how busy the city’s hotels and heritage sites will be.

Busiest arrival periods in Nepal, fiscal year 2025/26

Source: Nepal Tourism Board data reported by Onlinekhabar, measured in Nepali calendar months. Arrivals dip sharply in the monsoon.

• Book early for October–November and March–April. Good mid-range rooms in Thamel, Lazimpat and near Boudha fill first, and flights from the Gulf and India are priciest around Dashain.
• Best deals: June to August, and January. Many hotels discount heavily in the monsoon.
• Shoulder sweet spots: late November to mid-December (clear, dry, fewer people) and late February.

The Best Time to Visit Kathmandu by Type of Trip

There is no single perfect month for everyone. Start from what matters most to you:

What to Pack for Kathmandu, Season by Season

Local Tips: What Living in Kathmandu Teaches You About Timing

When Is the Worst Time to Visit Kathmandu?

July and August are the hardest months for most travelers: they bring the heaviest rain (July averages 366 mm), hidden mountains, muddy lanes and the most transport disruption. Still, they are not “bad” for everyone – if you are on a tight budget, mainly want temples and culture, or are heading to a rain-shadow region like Upper Mustang, the monsoon can work well.

If air quality matters to you, add January to April to your list of months to think twice about, and if you hate crowds, avoid the peak of October.

Frequently Asked Questions About the Best Time to Visit Kathmandu

What is the best month to visit Kathmandu?

November. It is the driest month (about 8 mm of rain), daytime highs are around 75°F, skies are clear for mountain views, air quality is better than in winter or spring, and in many years Tihar falls in early November.

Is October a good time to visit Kathmandu?

Yes – it is one of the two best months. The first week or so can still bring late-monsoon showers, but the second half is usually dry and clear. October is also Kathmandu’s busiest month and often coincides with Dashain, so book early and expect some closures on the main festival days.

Is it worth visiting Kathmandu during the monsoon?

It can be, if you mainly want culture, lower prices and fewer crowds. Rain usually comes in bursts rather than all day, and the air is cleanest of the year. You will rarely see the mountains, though, and road and flight delays are more common.

Does it snow in Kathmandu?

Snow in the city is extremely rare. Winter nights fall to around 36–37°F in December and January, and the surrounding hills occasionally get a dusting, but you should not plan a trip around seeing snow in Kathmandu.

When is air pollution worst in Kathmandu?

Roughly December to April, when dry weather and cold-air inversions trap pollution in the valley. It is lowest in the June–August monsoon and relatively better in October and November.

What is the cheapest time to visit Kathmandu?

June to August is cheapest, followed by January. Tourist numbers fall in these months and many hotels offer discounts. Prices are highest in October–November and March–April.

When can you see the Himalayas from Kathmandu?

Most reliably from late October to mid-December, on clear mornings. Ranges such as Langtang and Ganesh Himal are visible from high rooftops and from viewpoints like Nagarkot and Chandragiri. Views fade with spring haze and largely vanish in the monsoon.

How many days do you need in Kathmandu?

Three to four days covers the highlights: Kathmandu Durbar Square, Swayambhunath, Boudhanath, Pashupatinath, Patan and Bhaktapur. Add a day if you are visiting during a festival or want a sunrise trip to Nagarkot.

Sources: Climate-Zone (Kathmandu Airport 1991–2020 normals); Ministry of Home Affairs public holiday list 2083 BS via Pradhan & Associates; Nepal Tourism Board arrival data via Himal Press, Onlinekhabar and The Himalayan Times; Sah Telee, JNMA (Kathmandu air quality); Mahidol University PM2.5 studies (2025, 2026); Drik Panchang (Dashain 2027).