Iran’s diverse geography comes with having regions with different climate conditions at one point in time. However, you need not worry, as activities in Iran specifically fit every season and weather condition.
With its position in the Middle East, Iran is uncomfortably hot during summer, with temperature reaching higher than 38 °C (100 °F) at daytime. However, this season is best for outdoor adventures such as mountaineering and trekking.
On the other hand, wintertime is characterized by heavy snow downpour and freezing temperatures. Skiing is sometimes endurable during the day from November to March.
The best time to visit Iran is during the spring season, from the middle of April to early June, and the autumn season, from late September to early November. During these periods, the weather in the northern coast is generally mild, while Central Iran is fairly humid.
Northwestern Iran is usually around 10 to 15°C nippier than the rest of the country, while the south of the region usually elicits the hottest temperature.
These periods are also timely for the Rose and Rosewater Festival, which is celebrated between the months of April and June. Moreover, spring and autumn do not overlap with the Iranian New Year occurring in March, which experiences the busiest and heaviest influx of foreign visitors.