If you’re going to Nepal for trekking, there are two main seasons: October-December and February-April. This is because the majority of trekkers come to visit the popular areas of Annapurna and Everest and spring and autumn are the best times for these areas. Autumn is best, when the air has been washed clean by summer monsoons and the passes haven’t yet been snowed in. The weather is brisk but not too cold. In spring, the alpine passes are open again, but the air is hazy, and the views, while good, aren’t the same as in autumn (if spring is the only time available, it’s still worth going!).

If however you are more intrepid and want to explore the Nepal that lives off the beaten trail, then there is somewhere for you to trek in Nepal all the year round. In spring and autumn you can trek basically anywhere; in the monsoon you can trek in the rain shadow of the Himalayan Range; in winter you can have delightful trekking in the culturally rich mid-hills! If you’re going to Chitwan National Park be aware that it can be very hot and humid for most of the year, although from December to March it’s fantastic! The monsoons, which occur June-September, affect the whole country except for those areas in the rain shadow, and flooding is a strong possibility in the Chitwan region.

The following chart shows average daytime temperatures (in degrees Celsius);

J F M A M J J A S O N D
K 18 19 25 28 30 29 29 28 28 27 23 19
C 24 26 33 35 35 35 33 33 32 31 29 24

(K – Kathmandu, C – Chitwan)

Please note that temperatures do drop much lower at high altitudes