Iran is one of the few countries that have all four distinguished seasons. And at any time of the year, in each section of the country, one of the four seasons is visible. Iran’s variety in terms of temperature, humidity and rainfall differs from place to place and season to season. Length of the seasons differs in different regions.
Iran can be divided into 3 major climate areas:
Arid (desert) and semi-arid climate ( most of Iran)
Mediterranean climate ( the narrow strip alongside Caspian sea, north of Iran)
Cold dry climate ( in the mountain areas)