Climate and Weather for Travelling to Iran Iran is a large and vast country; it has a very varied climate with different weather systems covering an area of 1,648,195 km2 (636,372 sq miles). To compare the size of the country, Iran is about 5 times bigger than Italy and about 4.4 times bigger than Japan.

Best Time to Visit Iran? Iran’s four seasons are very well defined.  Due to its big size, the various regions that make up the country have very different weather conditions, temperature, rainfall and level of humidity during the year.  Depending on where you are, whether in a high mountainous area, a vast desert, a forest,