Nepal has a temperate climate with four main seasons. Those priortising visibility whilst visiting the mountains should visit in the autumn between September and November when the weather is mostly clear and dry and not yet too cold at higher elevations. The only downside to visiting at this time is that this is when most others will be visiting too.
Winter falls between December and January and is mostly clear. You’ll find that it never snows in Kathmandu but mornings can be extremely chilly and damp. Spring falls from February to April and brings with it a littler warmer weather and longer days. It’s a good time to visit for wildlife lovers – as you’ll see Rhododendrons in-bloom towards the end of the season. The haze from the oncoming heat can make it difficult to see the mountains though. The pre-monsoon season is between April and June – it brings with it stifling heat and afternoon rain showers – during this time, if you do want to trek, then do so at higher elevations where the temperatures are much more tolerable. The monsoon season comes into bloom around mid-June and lasts into September. The air at this of year is clean, all over the hills flowers are in bloom, butterflies are abundant and fresh fruit and vegetables are available everywhere. This however is the worse time of year for those wanting to trek in the mountains.
