Nepal Trekking Weather by Month: Temperatures, Rain & Best Treks
Nepal’s trekking weather can change dramatically within a single itinerary. You may begin the day in a green valley where the afternoon feels warm, then spend the night several thousand metres higher where temperatures fall below freezing.
That is why checking the weather in Kathmandu or Pokhara is not enough when you are planning a Himalayan trek.
A sunny day in Pokhara does not tell you what conditions will be like at Annapurna Base Camp, and a comfortable afternoon in Kathmandu says very little about the overnight temperature near Everest Base Camp.
Weather also changes between trekking regions. July can bring heavy monsoon rain to many southern Himalayan trails, while Upper Mustang and parts of Manang lie in the rain shadow and experience a much drier pattern. October may offer excellent mountain visibility, but a high pass can still receive fresh snow.
This guide is therefore less about declaring one season “the best” and more about understanding what the weather will actually mean for your trek.
We look at temperatures by elevation, monthly conditions, rain and snowfall, regional differences, high-pass weather and the routes worth considering at different times of the year.
Nepal Trekking Weather Main Highlights
For clearer Himalayan panoramas: October and November often provide excellent post-monsoon visibility.
For spring scenery: March and April combine warming conditions with rhododendron forests in suitable regions.
For monsoon travel: Look at rain-shadow destinations such as Upper Mustang instead of assuming every trekking region receives the same rainfall.
For winter trekking: Choose the route carefully and prepare for cold nights, snow and ice at higher elevations.
For high passes: Current snowfall, wind, visibility and trail conditions matter more than the seasonal label alone.
What Is Nepal Trekking Weather Really Like?
Nepal’s trekking weather is shaped by much more than the month on the calendar. Elevation, monsoon moisture, mountain barriers, wind, cloud, snowfall and the orientation of individual valleys all influence the conditions you experience.
For a trekker, the weather can be understood through four practical questions: how warm or cold will it be, how likely are rain or snow, how clear will the mountains be, and what condition will the trail be in?
These do not always move together. A cold November morning can offer some of the clearest mountain views of the year. A warmer May afternoon can bring haze, cloud or thunderstorms. A bright sunny morning does not guarantee that an exposed pass is free of ice.
How Altitude Changes Trekking Temperatures in Nepal
Elevation is one of the biggest reasons trekking temperatures change so dramatically. As you climb higher, temperatures generally fall.
This is why a traveller can feel comfortable in a T-shirt in a lower valley while another trekker on the same route is wearing a down jacket at a high camp.
There is no perfect formula that predicts exactly how cold a village will be. Wind, cloud cover, snow, slope direction and local geography can all affect the temperature.
Still, the elevation of your overnight stop is one of the most useful pieces of information when deciding what clothing and sleeping gear you need.
| Elevation | Typical Environment | What the Weather Usually Means |
|---|---|---|
| Below 1,500 m | Lower valleys and warmer settlements. | Heat, humidity and rainfall may matter more than extreme cold. |
| 1,500–3,000 m | Hill villages, forests and many popular trekking sections. | Sunny afternoons can feel warm while mornings, shade and evenings are much cooler. |
| 3,000–4,000 m | High villages, ridges and alpine terrain. | Cold nights, frost and possible snow become much more important. |
| Above 4,000 m | Glacial terrain, base camps, high viewpoints and passes. | Freezing temperatures, wind chill, snow and ice can occur even during the main trekking seasons. |
Daytime and Nighttime Temperatures Can Feel Completely Different
Trekkers often focus on the temperature while walking, but the overnight low can be much more important. Direct sunshine can make a cool mountain afternoon feel surprisingly comfortable. Once the sun disappears, the temperature may fall very quickly.
A high teahouse bedroom is also not the same as a heated hotel room in Kathmandu. Heating may be limited to a common dining area, so your sleeping bag and warm layers matter even when the walking temperature during the day feels pleasant.
Rain, Snow, Wind and Visibility Matter as Much as Temperature
| Weather Factor | Why It Matters While Trekking |
|---|---|
| Rain | Can create muddy trails, slippery stone steps, swollen streams, leeches and road or landslide problems. |
| Snow and ice | May make high passes, steep trails and exposed viewpoints considerably more difficult. |
| Wind | Can make an exposed ridge feel far colder than the actual air temperature. |
| Cloud and mist | Can hide the mountains and reduce visibility on exposed terrain. |
| Strong sunshine | High-altitude sun can cause sunburn and overheating even when the air itself is cool. |
Nepal Trekking Weather Month by Month
A month-by-month guide is useful as long as it is treated as a planning tool rather than a forecast. The same month can produce different conditions in Everest, Annapurna, Langtang and Mustang.
January
Weather: Cold winter conditions with possible snow and ice at altitude.
Visibility: Clear winter days can offer excellent views.
Main challenge: Freezing nights and snow-covered higher trails.
Consider: Ghorepani Poon Hill and suitable lower routes.
February
Weather: Late winter with gradually warmer daytime conditions.
Visibility: Often attractive during clear winter periods.
Main challenge: Snow may remain on shaded trails and passes.
Consider: Poon Hill or Everest View.
March
Weather: Spring begins and lower trails gradually warm.
Visibility: Good mountain views are possible during clear periods.
Main challenge: Snow may remain at higher elevations.
Consider: Poon Hill, Langtang Valley and Annapurna Base Camp.
April
Weather: Peak spring trekking period with warmer lower trails.
Visibility: Often excellent during clear mornings.
Main challenge: High camps and passes can still be freezing.
Consider: Everest Base Camp, ABC, Mardi Himal and Langtang.
May
Weather: Warmer valleys with increasing pre-monsoon influence.
Visibility: Clear mornings may give way to afternoon cloud.
Main challenge: Heat lower down and developing thunderstorms.
Consider: EBC, Gokyo and suitable Annapurna routes.
June
Weather: Transition into monsoon with increasing rainfall.
Visibility: Less dependable on wetter routes.
Main challenge: Wet trails, roads and cloud.
Consider: Upper Mustang.
July
Weather: Main monsoon conditions across much of Nepal.
Visibility: Cloud can hide mountains for extended periods.
Main challenge: Rain, mud, landslides and transport delays.
Consider: Upper Mustang and suitable rain-shadow regions.
August
Weather: Monsoon remains established across many trekking regions.
Visibility: Unpredictable on wetter trails.
Main challenge: Persistent rain and unstable road sections.
Consider: Upper Mustang with route-specific access checks.
September
Weather: Transition from monsoon toward autumn.
Visibility: Usually improves later in the month.
Main challenge: Early September can remain wet.
Consider: Later departures for EBC, Langtang and Annapurna.
October
Weather: One of Nepal’s strongest all-round trekking periods.
Visibility: Excellent potential for post-monsoon views.
Main challenge: Busy trails and cold high-altitude nights.
Consider: EBC, Gokyo, Annapurna Circuit and Manaslu.
November
Weather: Often clear but increasingly cold.
Visibility: Frequently excellent.
Main challenge: Freezing nights and possible high-pass snow.
Consider: EBC, Poon Hill, Langtang and suitable circuits.
December
Weather: Winter returns with cold nights and possible snowfall.
Visibility: Crisp winter views are possible.
Main challenge: Ice, snow and shorter daylight.
Consider: Suitable lower-altitude routes after checking recent conditions.
Nepal Trekking Weather by Region
The monthly calendar gives the broad pattern. The next step is matching that pattern with your actual trekking region. Everest, Annapurna, Langtang, Manaslu and Mustang can behave very differently during the same month.
Temperature Note
The ranges below are approximate seasonal planning figures for representative locations on each trek. They are not forecasts. Individual days may be warmer or colder because of wind, cloud, snow, sunshine and local terrain.
Everest Region Weather and Temperatures
The Everest trail is a good example of why one temperature cannot describe an entire trek. Lukla sits below 3,000 m, Namche Bazaar is around 3,440 m, while Gorak Shep sits above 5,100 m.
| Season | Namche Bazaar ~3,440 m | Upper EBC Trail / Gorak Shep ~5,160 m | What to Expect |
|---|---|---|---|
| Spring | Day roughly 6–14°C Night about -3 to 4°C |
Day roughly -2 to 3°C Night about -10 to -5°C |
Comfortable lower-trail walking but genuinely cold high up. |
| Monsoon | Day roughly 13–16°C Night about 6–10°C |
Day roughly 5–6°C Night around 0–2°C |
Warmer but cloudier, with rain lower down and more flight disruption. |
| Autumn | Day roughly 9–15°C Night about -4 to 6°C |
Day roughly 1–6°C Night about -9 to 0°C |
Strong visibility with increasingly cold nights. |
| Winter | Day roughly 3–8°C Night about -9 to -4°C |
Day around -5 to -2°C Night about -14 to -11°C or colder |
Very cold upper trail with possible snow and ice. |
Annapurna Region Weather and Temperatures
Annapurna has one of Nepal’s widest weather ranges. Southern foothills receive substantial monsoon rainfall, while Manang and other northern valleys are much drier. Thorong La, meanwhile, rises above 5,400 m and remains a serious high-mountain environment.
| Season | Manang ~3,500 m | Thorong Area ~4,500–5,416 m | Weather Character |
|---|---|---|---|
| Spring | Around 5–15°C by day Cold nights near or below freezing |
Roughly -10 to 5°C | Warming valleys with possible remaining winter snow high up. |
| Monsoon | Often around 10–18°C by day | Roughly -3 to 14°C depending on elevation | Wet approaches but drier conditions around Manang. |
| Autumn | Around 5–15°C by day | Approximately -8 to 8°C | Strong visibility potential and cold pass mornings. |
| Winter | Cold days with sub-zero nights | Can fall towards -20°C | Snow and ice can make Thorong La difficult or inaccessible. |
Langtang Valley Weather and Temperatures
Langtang climbs from forested lower sections towards the alpine environment around Kyanjin Gompa at approximately 3,870 m. Lower sections can feel pleasant while nights in the upper valley remain very cold.
| Season | Kyanjin Day | Kyanjin Night | Trail Character |
|---|---|---|---|
| Spring | Approximately 3–13°C | About -15 to -3°C | Spring forests with cold high-valley nights. |
| Monsoon | Approximately 8–14°C | About -5 to 0°C | Warmer high valley but wetter lower trails and more cloud. |
| Autumn | Approximately 2–11°C | About -16 to -3°C | Clearer conditions with increasingly cold nights. |
| Winter | Approximately -2 to 7°C | Can fall towards -22 to -14°C | Snow and severe overnight cold become key concerns. |
Manaslu Circuit Weather and Temperatures
The Manaslu Circuit moves from relatively warm lower valleys to Samagaon at around 3,530 m and finally to Larkya La above 5,100 m. The temperature difference can therefore be substantial.
| Season | Lower / Mid Route | Larkya La Area | Main Weather Issue |
|---|---|---|---|
| Spring | Around 10–20°C lower down | Approximately -5 to 10°C | Remaining winter snow and later spring cloud. |
| Monsoon | Often 15–25°C lower down | Roughly 0–10°C above 4,000 m | Rain, muddy trails and landslide-prone access. |
| Autumn | Often around 5–15°C in middle elevations | Approximately -10 to 5°C | Good visibility but freezing pass mornings. |
| Winter | Upper villages may remain below freezing | -20°C or lower possible | Heavy snow can make Larkya La impractical. |
Nar Phu Valley Weather
Nar Phu lies in the northern Annapurna region, where the landscape becomes drier and more Tibetan in character. That does not mean the entire itinerary is protected from monsoon weather or winter snow.
Spring and autumn are generally the easiest periods to investigate. Nights in Nar and Phu can remain below freezing even when daytime sunshine feels comfortable, while Kang La above 5,300 m is exposed to cold, wind, snow and ice.
For this remote route, current forecasts and recent pass conditions are more useful than relying on one artificial average temperature for the whole valley.
Upper Mustang Weather and Temperatures
Upper Mustang behaves very differently from Nepal’s wetter southern slopes. Its position in the Himalayan rain shadow makes June, July and August realistic months to consider when many classic routes are affected by the monsoon.
| Season | Lo Manthang Day | Lo Manthang Night | Conditions |
|---|---|---|---|
| Spring | Approximately 8–16°C | About -2 to 5°C | Dry walking conditions, cold nights and wind. |
| Monsoon | Approximately 13–20°C | About 3–8°C | Much drier than many southern Himalayan regions. |
| Autumn | Approximately 6–14°C | About -5 to 2°C | Dry and increasingly cold later in the season. |
| Winter | Approximately -2 to 6°C | Can fall towards -25 to -15°C | Severe cold, wind and reduced services. |
Which Nepal Trek Has the Best Weather for What You Want?
| Your Priority | Routes to Consider | Weather Consideration |
|---|---|---|
| Clear Himalayan panoramas | EBC, Gokyo, Annapurna Circuit and Pikey Peak | October and November often offer strong visibility. |
| Spring flowers | Poon Hill, Mardi Himal and Langtang | March and April are worth considering. |
| Monsoon trekking | Upper Mustang and selected northern routes | The destination may be dry while access roads remain affected by rain. |
| Winter mountain views | Poon Hill and suitable lower routes | Clear skies are possible but freezing nights become important. |
| High-pass adventure | Manaslu, Annapurna Circuit, Three Passes and Nar Phu | Recent snow and pass accessibility matter more than the month alone. |
How to Read a Mountain Weather Forecast Before Trekking
A forecast becomes useful only when you are checking the right location. Kathmandu’s forecast may help with your arrival day, but it does not tell you what will happen at Everest Base Camp or Thorong La.
| Check | Why It Matters |
|---|---|
| Correct location and altitude | Use a forecast close to the village, camp or pass you will actually visit. |
| Daytime high | Helps with walking layers, hydration and sun exposure. |
| Overnight low | Important for insulation and sleeping gear. |
| Wind | Can dramatically increase cold exposure on ridges and passes. |
| Rain or snow | Rain affects lower routes while snow can change a high-pass crossing completely. |
| Hourly timing | Morning and afternoon conditions may be very different. |
Seasonal averages are useful when choosing your month. Once departure approaches, current weather becomes more important.
What to Pack for Nepal’s Changing Trekking Weather
The most practical approach for packing is layering. You may start walking in a cold morning, become warm during a climb and need waterproof protection later in the day.
| Item | Why You Need It |
|---|---|
| Base layers | Manage sweat and provide the first layer of warmth. |
| Fleece or mid-layer | Useful for cool mornings and evenings. |
| Insulated jacket | Important for high-altitude evenings and winter conditions. |
| Waterproof shell | Protects against rain and wind. |
| Warm hat and gloves | Useful for high elevations and exposed mornings. |
| Trekking boots | Grip matters on wet stone, mud, snow and rough trails. |
| Sun protection | Sunglasses, sunscreen and lip protection are useful even in cold air. |
Weather Risks Every Trekker Should Understand
| Risk | Why It Matters | Practical Response |
|---|---|---|
| Heavy rain | Can trigger landslides and flooding. | Follow local advice and avoid unsafe crossings. |
| Snow and ice | Can transform an ordinary trail into a difficult route. | Check recent snowfall before crossing high terrain. |
| Wind chill | Can make exposed terrain feel much colder. | Use insulation and wind protection. |
| Wet clothing | Rapidly increases heat loss. | Protect dry layers and change when possible. |
| Altitude | Good weather does not reduce altitude risk. | Follow a sensible acclimatisation schedule. |
How Weather Affects Lukla Flights and Road Travel
Weather affects more than the trail. Several major trekking routes depend on mountain flights or long road transfers, and these can be disrupted by cloud, rain, wind, landslides or poor visibility.
Lukla flights are especially sensitive to mountain weather. A delay can affect both the start and finish of an Everest itinerary. Leaving buffer time before an international flight reduces the pressure created by a delayed mountain flight.
During the monsoon, road-based routes can face different problems. Landslides or damaged road sections may delay access even if the trekking destination itself lies in a rain shadow.
How to Adjust Your Trek When the Weather Changes
Good weather planning is not only about choosing the right month. Conditions can change after your trek has already started, and the safest or most comfortable plan may be different from the itinerary you expected to follow.
A cloudy afternoon does not automatically require changing your route, while fresh snow on a high pass may require a completely different decision. The important thing is recognising which changes are inconvenient and which can affect safe travel.
| Weather Situation | What It May Mean | Practical Response |
|---|---|---|
| Cloud building during the day | Mountain views may become less reliable later in the afternoon. | Where appropriate, start early and complete exposed sections before conditions deteriorate. |
| Heavy or persistent rain | Trails may become slippery and slopes or rivers may become unstable. | Slow the pace and avoid unstable slopes or dangerous crossings. |
| Fresh snow higher up | Trail markings may disappear and steep terrain can become harder. | Check conditions before leaving. A high pass may need to be delayed or cancelled. |
| Ice on a pass | Normally straightforward terrain can become slippery and technical. | Discuss timing, route conditions and equipment with your guide. |
| Strong wind | Wind chill increases cold exposure and makes exposed terrain harder. | Add wind protection and reassess exposed sections if necessary. |
| Poor visibility | Navigation may become difficult. | Stay together and wait when the route ahead cannot be travelled confidently. |
| Sudden temperature drop | Wind or precipitation may make conditions much colder quickly. | Add insulation before becoming very cold and protect dry clothing. |
| Transport delay | The itinerary may start or finish later than planned. | Keep buffer time around weather-sensitive transport. |
The Weather Does Not Have to Follow Your Itinerary
A trekking itinerary is a plan, not a promise that a mountain pass must be crossed on a particular day. If snowfall, wind, flooding, poor visibility or trail damage changes the situation, adjusting the route is part of responsible Himalayan trekking.
How Much Weather Flexibility Should You Build Into Your Trip?
Weather flexibility becomes more important as an itinerary becomes more remote or more dependent on high passes, mountain flights and long road transfers. A Poon Hill trek and an Everest Three Passes itinerary do not require the same amount of contingency planning.
For routes using Lukla flights, leave some space between your expected return from the mountains and your international departure.
For routes crossing Thorong La, Larkya La, Cho La, Kongma La, Renjo La or Kang La, avoid designing the trip so tightly that a single weather delay creates pressure to cross in poor conditions.
| Type of Trek | Why Flexibility Matters |
|---|---|
| Short lower-altitude trek | Weather affects views and trails, but changes are often easier to manage. |
| Base-camp trek | Snow, altitude and transport delays can affect the schedule. |
| High-pass trek | Snow, wind and visibility can determine whether a crossing is practical. |
| Monsoon trek | Roads and access sections may be affected even when the destination is relatively dry. |
| Remote restricted-area trek | Fewer alternatives can make weather delays harder to absorb. |
The goal is not to add unnecessary days to every Nepal holiday. It is to avoid designing an itinerary where one delayed flight, one day of heavy snow or one unsafe pass crossing immediately creates a problem.
Choose the Trek That Fits the Weather
There is no single temperature or weather forecast that describes trekking in Nepal. Conditions change from region to region and often from one overnight stop to the next.
The month tells you the broad seasonal pattern. The elevation tells you how cold the trek may become.
The region tells you how much rain, wind or snow may matter. And the current forecast tells you what conditions you may actually face when your trek begins.
If your dates are flexible, choose the season that matches the experience you want. If your dates are fixed, choose a trekking region that fits those conditions instead of forcing a famous route into the wrong time of year.
Not Sure Which Trek Matches Your Travel Month?
Tell us when you plan to visit Nepal, how many days you have and what kind of trekking experience you want. We can help you compare routes according to the season, elevation and expected weather conditions.