Top 20 Hottest Countries in the World Mali. Dogon Village of Songo in Mali, the hottest country in the world. ... Burkina Faso. Burkina Faso, which borders Mali, is the second-hottest country on earth. ... Senegal. Burkina Faso isn't the only hot country that borders Mali! ... Tuvalu. ... Djibouti. ... Mauritania. ... Bahrain. ... Palau. More items...