Yes, but the average temperature in vast majority of the areas is higher than the avg temperature of say Europe. When we say Africa is warmer, it is a simplification simply by the virtue that its centroid closer to equator than Europe. Thus, we can say that it's warmer.

Side note: don't use rhetorical questions to respond to someone. It's demeaning. Rephrase "Why? Africa is a huge continent with all kinds of weather."

It's not demeaning, it actually adds color to the answer and makes it more engaging. I don't know what's up with HN's fetishizing of impassionate, humorless and snarkless style. Not everything has to be written like the IEE 754 specification.

Snarky comments explicitly discouraged in the official guidelines, which you can find at the bottom of this page.

You can be passionate and nice to people. This was mean.

There's a visualization here: https://twitter.com/JeromeRoos/status/1236729011889418246

Those temperatures are normalized to sea-level. If you go to say La Paz or Macchu Pichu expecting scorching weather based on that graphic you are going to have a bad time.