The weather conditions in Nepal depend on the season and, in the mountains, also on the altitude. For this reason, it is difficult to make precise predictions for the trekking routes.
For our trekking tours, we recommend the period from March to May and from October to December as the best time to travel. In spring, the rhododendron blossom is well worth seeing, but the mountains are sometimes covered in clouds from the early afternoon. In the fall, visibility is often very clear. But it can get quite cold at night. The monsoon season is also well suited for trekking tours in the Dolpo trekking region.
You should take warmer clothing (down jacket) at any time of year, but especially in the months of November to February. In the summer months you also need lighter things during the day. Warm clothing is always required for tours in alpine terrain and alpine mountain clothing at higher altitudes. As it can get very cold in the fall/winter season and there is generally no heating in Nepalese accommodation, we recommend warm clothing and a good sleeping bag for the night. In October/November there are often long-lasting and stable fine weather conditions with clear visibility. Temperatures are quite mild at low altitudes, but in the mountains the temperature differences between day and night are quite large. You should be aware that there is no heating, especially in the lodges in the mountains, and that there is not always hot water (if there is, then for a fee). Please understand that the lounges are heated sparingly, as firewood is an extremely rare commodity, especially in the mountains.