11 Countries with Highest Average Temperature in the World

6. Niger

Average annual temperature: 27.57 °C – 81.63 °F

Country named after the river Niger is entirely landlocked and mostly Saharan. Sahara desert actually takes more than 80 percent of country’s area and it’s easy to see why Niger takes position number six in our list of 11 countries with highest average temperature in the world. Desert, however, doesn’t stretch towards the south, but that’s where tropical heat tends to even things up. All in all, Niger is one very hot country with temperatures dropping below 20 °C or 68 °F only during January. However, this is compensated with over 30 °C – 86 °F from April to September.