Iran has a very varied climate, so the weather changes a lot depending on the region. In general, Iran is mostly dry or semi-dry, with hot summers and cool to very cold winters, especially in inland and mountain areas. The northern Caspian coast is different because it is more humid and receives more rainfall than most parts of the country.
Spring in Iran is one of the most pleasant seasons. From March to May, many places have mild temperatures, clearer skies, and comfortable weather for sightseeing. Cities like Tehran, Shiraz, Isfahan, and Yazd are usually easier to explore during this time. Mountain areas can still feel cool, especially at night.
Summer in Iran can be extremely hot, especially in central, southern, and desert regions. Places such as Yazd, Kerman, Bandar Abbas, and areas near the Persian Gulf can become very hot and dry. Southern coastal areas may also feel humid. Travelers should carry water, wear light clothing, and avoid long outdoor activities during the hottest part of the day.
Autumn in Iran is another good season for travel. From September to November, the summer heat slowly reduces, and the weather becomes more comfortable in many tourist cities. It is a good time for cultural sightseeing, walking tours, desert visits, and photography. Northern and western Iran may start getting more rainfall during this season.
Winter in Iran can be cold, especially in the north, northwest, west, and mountain regions. Cities such as Tabriz, Mashhad, and mountain areas near Tehran can experience very cold weather and snow. At the same time, southern Iran and the Persian Gulf coast remain milder, making them more comfortable for winter travel.
Rainfall in Iran is not evenly spread. The Caspian Sea region in the north is wetter and greener, while central and eastern Iran are much drier. Most rainfall in many parts of the country happens from late autumn to spring, while summers are usually very dry.
Overall, the best seasons to visit Iran are spring and autumn, because the weather is usually more comfortable for sightseeing and outdoor activities. Summer is better avoided in desert and southern regions unless you are prepared for strong heat. Winter can be good for southern Iran, but northern and mountain areas may be very cold.
