Some of the hottest countries include Saudi Arabia, Iraq, and Kuwait, which are located in the Middle East. These countries experience high temperatures due to the desert climate, with very little rainfall throughout the year.

When measured by the highest average year-round temperature, the top three hottest countries in 2026 are generally Mali, Djibouti, and Senegal. Mali consistently ranks as the hottest, with a massive portion of the country covered by the Sahara Desert, resulting in average daily temperatures frequently exceeding 30°C (86°F) and peaking well over 45°C (113°F) in the summer. Djibouti follows closely, with its volcanic landscapes and high humidity from the Red Sea creating a "triple-digit" environment for much of the year. Senegal ranks third, particularly in its interior regions where the Sahelian heat is relentless. It is important to distinguish "average temperature" from "extreme peaks"; while countries like Kuwait and Iraq often record the world's highest daily temperatures (sometimes hitting 54°C/129°F), the West African nations maintain the highest heat levels consistently throughout the entire calendar year. For 2026 travelers, these regions require serious heat-mitigation strategies and a focus on visiting during the slightly cooler "winter" months of December and January.