Iran's vast size and varying topography result in a highly diverse climate, generally classified into three distinct zones. The majority of the country experiences an arid or semi-arid climate, characterized by long, hot, and dry summers, and short, cool winters.
The Caspian coastal strip in the north features a subtropical climate with significant rainfall evenly distributed throughout the year, supporting lush forests. In contrast, the high-altitude regions of the Zagros and Alborz mountains endure severe winters with heavy snowfall and sub-freezing temperatures, providing excellent conditions for winter sports.
Summers in the southern coastal regions are intensely hot and humid, while the interior deserts experience some of the highest recorded land surface temperatures on Earth. The best times to visit most of Iran are during the spring (March to May) and autumn (September to November) when temperatures are mild and pleasant. Natural disaster risks include severe, frequent earthquakes due to the country's location on major seismic fault lines, as well as periodic droughts and flash floods.
