Lots of tourists are surprised at how cool it can be in the Ethiopian highlands. Be prepared for sudden cold weather and mountain storms. During the day in the dry season, lightweight clothing is fitting but it is desirable to carry a lightweight sweater. A jacket or sweater is desirable for evenings. For chilly days in the ?winter? rainy season (from June to September), light woolen clothing is comfortable.

As you move down from the highlands the temperature increases dramatically, and you recognize that you are certainly in the tropics, after all. In the lowlands:

Canvas or leather walking shoes are practical.
Light clothing is a must.
A hat is a wise precaution for days in the sun.

Even if the weather is not hot, the sun can be intense, and sunglasses are a wise precaution. Sunscreen lotion is also desirable. T-shirts, even tank tops, and knee-length walking shorts are acceptable anywhere outside of the streets of Addis Ababa ? although long trousers are fine at any of the lakesides, but in the towns and cities, halter tops and short shorts are considered improper. It is best to cover up out of good manners.