Occasionally some people suggest that the difference between countries where shoes are removed and where they are kept on is the climate. This is pretty misleading.
It is true that most countries with harsh winters like Canada and Finland are in the shoes-off camp, while the gentle weather of Mediterranean Europe is enjoyed by Spanish and Italians who for the most part, keep their shoes on indoors.
However, there are many countries with warm climates that practice the shoes-off rule. These include:
United Arab Emirates
And in some countries which have cold winters, but warm summers, for instance Albania and Croatia, shoes are removed over the whole year, winter and summer.
The fact is that whether the weather is hot or cold, dirt is still dirt. The fact that the weather outside is warm does not mean that the streets and the soil outside is clean.