Nepal Temperature Guide: By Region and Season

Nepal temperature is one of the hardest things to sum up about the country, because there is no single answer — it depends entirely on where you stand and how high you are. Within roughly 150 kilometres, Nepal rises from subtropical plains near sea level to the highest mountains on Earth, stacking three distinct climate zones on top of each other. The same afternoon can be sweltering in the Terai, mild in Kathmandu and bitterly cold at Everest Base Camp. This guide breaks Nepal's temperatures down by region and by season, with a quick-reference table, so you can plan for the place you are actually going. For the calendar view, pair it with our Nepal weather by month guide.

Key takeaways

• Nepal has three temperature zones by altitude: the hot Terai lowlands, the mild hills, and the cold high mountains.
• The Terai can exceed 37 °C in summer and top 40 °C before the monsoon; winters there are a mild 7–23 °C.
• The hills (Kathmandu, Pokhara) are the most comfortable — roughly 2–30 °C across the year with no extreme heat.
• The high mountains stay below freezing much of the year and only reach around 20 °C at their warmest.
• Temperature drops by about 6 °C for every 1,000 m of altitude gained.
• Autumn and spring are the most comfortable seasons countrywide; the pre-monsoon months are the hottest.

Nepal's three temperature zones

Nepal's geography runs in roughly parallel bands from south to north, each colder than the last. Understanding these three zones is the single most useful thing for planning, because they explain why a national "average" temperature is almost meaningless.

| Zone | Altitude | Summer | Winter | |---|---|---|---| | Terai (lowlands) | ~60–300 m | Often above 37 °C, can top 40 °C | Mild, ~7–23 °C | | Hills (mid-mountains) | ~800–2,500 m | Mild, ~20–30 °C | Cool to cold, ~2–12 °C | | High mountains | Above ~3,000 m | Up to ~20 °C, cold at altitude | Below freezing, snow up high |

Indicative temperature ranges by region (as of June 2026); local figures vary with exact elevation and aspect.

The unifying rule is altitude: temperature falls by roughly 6 °C for every 1,000 metres you climb. That single fact links the three zones and explains the whole country's climate.

The Terai: hot lowlands

Nepal's southern strip, the Terai, is a continuation of the North Indian plains and the country's hot zone. From April to June, before the monsoon breaks, daytime temperatures regularly push past 37 °C and can exceed 40 °C, with high humidity. Winters, by contrast, are genuinely pleasant — mild days around 20 °C and cool nights — which is exactly why this is the season to visit the Terai's famous wildlife parks. If a jungle safari is on your list, our Chitwan safari guide explains why the cooler, drier months from January to April give the best wildlife viewing, when shorter grass and water-seeking animals make rhinos and tigers easier to spot.

The hills: the comfortable middle

The hill region, between roughly 800 and 2,500 metres, is where most visitors spend their time, and it is the most temperate part of Nepal. Kathmandu and Pokhara both sit here, enjoying mild days, cool-to-cold nights and an absence of the extreme heat that grips the plains. Kathmandu's valley, for instance, runs roughly 19–35 °C in summer and a cool 2–12 °C in winter. This band is comfortable for sightseeing and trekking through much of the year, though winter nights still call for warm layers because heating is limited. The hills also catch the year's best mountain views in the clear autumn and winter air, which is why hill viewpoints like Nagarkot and Sarangkot are timed around the cool, dry months. For the capital specifically, our Kathmandu weather guide gives a full month-by-month breakdown.

It is worth stressing how local the hill temperature can be. Two towns at similar latitudes but a few hundred metres apart in altitude — or one on a sunny south-facing slope and one in a shaded valley — can feel meaningfully different on the same day. The 6 °C-per-1,000-metre rule is the best mental shortcut: if you know roughly how high your destination sits, you can estimate how much cooler it will be than Kathmandu, and pack accordingly.

The high mountains: cold by default

Above about 3,000 metres, Nepal becomes alpine and then subpolar, and temperature is governed by altitude more than season. Nights drop below freezing for much of the year, and the higher you go the colder it stays even in midsummer, when the warmest peaks-area temperatures reach only around 20 °C in sheltered spots. This is the zone where trekking weather is decided: high passes and base camps are deeply cold, and the loftiest routes — such as Thorong La on the Annapurna Circuit or the Everest high passes — can be blocked by snow in winter. Anyone heading this high should plan for serious cold whatever the calendar says, and read our altitude sickness guide before going up.

How the seasons shift the picture

Layered on top of the regional zones are Nepal's four seasons, which move the temperatures up and down:

• Spring (March–May) — warming across the board; the hills are lovely early on, but the Terai turns hot by May and pre-monsoon haze builds.
• Monsoon (June–September) — warm and humid everywhere below the mountains, with roughly 80% of the year's rain falling in these months, mostly July and August.
• Autumn (September–November) — the most comfortable season, with hill days around 25 °C and cool nights near 10 °C, plus the year's clearest mountain views.
• Winter (December–February) — mild in the lowlands, cold at night in the hills, and well below freezing high up, with snow closing the highest passes.

For most travellers, autumn and spring hit the sweet spot of comfortable temperatures and clear skies. Our best time to visit Nepal guide turns this into activity-by-activity advice.

One important nuance is the monsoon rain shadow. Most of Nepal gets soaked from June to September, but the far-north regions that sit behind the main Himalaya — Upper Mustang, Lower Dolpo and parts of Manang — stay relatively dry because the mountains wring the rain out before it reaches them. Temperatures there are still cold at altitude, but the lack of heavy rain makes these the classic monsoon-season trekking areas while the rest of the country is wet. It is a good example of how, in Nepal, you cannot read temperature or rainfall off the calendar alone without also knowing exactly where you are standing.

How weather feels day to day

Numbers on a table only tell half the story; what matters on a trip is how the temperature actually feels. In the Terai, the hot months are sapping because of humidity, not just heat, so midday activity slows and early mornings and evenings become the time to be out. In the hills, the daily swing is the headline: a 25 °C afternoon in Kathmandu or Pokhara can give way to a night cold enough to want a jacket, particularly in winter when indoor heating is scarce. In the mountains, the sun is fierce by day at altitude even when the air is cold, and temperatures plunge the moment it drops behind a ridge — which is why trekkers layer up in late afternoon and why sunburn and frost can be back-to-back risks on the same day.

Planning around the temperature

Because the temperature you experience depends so heavily on altitude, the practical takeaway is to plan for your destination, not the country. A trip that combines a Chitwan safari, a few days in Kathmandu and a high trek will span all three zones in a single fortnight — meaning you should pack for heat, mild hill weather and serious cold at once. The universal solution is layering: light clothing for warm lowland and daytime conditions, a warm mid-layer for cool hill evenings, and proper insulated, waterproof gear for anything high. Our Nepal trekking packing list builds a full kit around exactly these swings, and the two-week Nepal itinerary shows how a realistic route moves between the zones.

Sources

• Geographical Division, Climate & Weather of Nepal — Hop Nepal
• Weather in Nepal by Altitude — Trek me Nepal
• Climate — Nepal Tourism Board
• Weather and Climate in Nepal — Relax Getaways