Weather and Climate
With a total area of over 1,640,000 Km2, Iran has a heterogeneous climate. The difference is mainly due to a great variety of weather conditions and multiple geographic features including forests, seas, deserts and high mountain ranges. In the mountainous regions of the northwest, the climate varies from mildly cold to subarctic according to altitude and annual average snowfall. Hot regions of central and southeast Iran show features of desert climate characterized by extreme temperatures and low precipitation level. The coastal regions of the Persian Gulf and the Gulf of Oman have hot climate with a high level of humidity in western coasts and tropical monsoon climate in the southeast towards Chabahar. North eastern Iran is generally classified as having semi-arid climate with low rainfall, hot summers and cool winters with occasional snowfalls. In contrast, heavy rainfalls and a plain moderate climate is the main feature of most regions in the north near the coast of the Caspian Sea with the exception of the areas near Alborz mountain ranges and Gorgan Valley where the prevailing climate is respectively mountainous and semi-arid.
Four Seasons in Iran
Iran is the land of four seasons. That is to say, the defining character of every season is reflected at least in one region of the country. People may come to Iran any time of the year and find their desired weather. In spring, the weather is mild all over Iran bar the mountainous heights and deserts whose weather is predictably extreme. Summer is comfortably cool in the mountainous regions of the northwest with velvety breeze and an occasional touch of drizzle. In autumn, the temperature plunges significantly all over the country specially in the central provinces where people get a respite from the searing sun of July and August. Coastal zone of the Persian Gulf is a heaven on earth during winter with a beautiful sunshine and balmy weather. Watching the sunset on a late winter afternoon standing upon the red soil of Hurmuz island at the heart of the Persian Gulf is a once in a lifetime experience.