The short answer most guides give — October to November, and March to April — is a good default. But Nepal packs so many climates into one country that the real answer depends on where you are going and what you want to do. Here is a season-by-season breakdown.
Autumn (late September–November): the classic season
For most visitors this is the best window. The monsoon has cleared the air, the mountains are at their most visible, temperatures across the popular elevations are comfortable, and the major treks are in full swing. It also coincides with Nepal’s biggest festivals, Dashain and Tihar, which add colour but also busy roads and full lodges. The trade-off for perfect conditions is crowds and higher prices.
Spring (March–April/May): the second-best window
Spring brings warm, stable weather, rhododendron forests in bloom across the hills, and excellent trekking, with the added draw of the Everest climbing season’s energy in the Khumbu. Haze can build later in spring, softening distant views, and the lower elevations grow hot toward May.
Monsoon (June–August): not a write-off
The summer monsoon brings rain, cloud, leeches at lower elevations and landslide risk on mountain roads — but it is not useless. Crucially, it is the best time for the rain-shadow regions of Upper Mustang and Dolpo, which stay dry while the rest of the country is wet. The hills are lush and green, and visitor numbers drop sharply.
Winter (December–February): cold and clear
Winter offers crisp, clear skies and very few crowds. Lower and mid-elevation trekking (the Annapurna foothills, Ghorepani–Poon Hill, Chitwan and the Kathmandu Valley) is very pleasant. High passes and high-altitude treks, however, can be blocked by snow and bitterly cold, and some high lodges close.
At a glance
| Season | Best for | Watch out for |
|---|---|---|
| Autumn | Trekking, mountain views, festivals | Crowds, higher prices |
| Spring | Trekking, rhododendrons, warmth | Late-season haze, lowland heat |
| Monsoon | Mustang/Dolpo, green hills, few tourists | Rain, leeches, road landslides |
| Winter | Low treks, clear skies, solitude | Snow-blocked passes, cold nights |





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