Thank you very much ! It is necessary to dress in layers ... cold in the early morning and after sunset but pleasant during the day , however it also depends on the areas , surely you need light clothes but also heavy jackets for the cold . There are many good quality local tour operators that can be found by searching the internet , My tour operator was good but there are so many of all prices . My flight was: Rome > Addis Abeba > Windhoek with Ethiopian Airlines . My best regards !