If you are planning to visit the Northern Highlands (Historical Northern Route), the best time to visit is from October to March (although it also does not rain very heavily during the rainy season). It is worth noting that the Northern route itinerary can incorporate trekking in the Simien Mountains, which it is advisable to do from September to November when it is dry, green and dust-free. If, on the contrary, you would prefer to experience the lifestyle of more than 50 unique tribes in the Omo River region of South Western Ethiopia, it is advisable to visit from August to October. Finally, the expedition to the Danakil Depression, as one of the hottest places on earth reaching temperatures of 50ºC (122ºF), is best visited between November to early January.