Iran is among the only countries with a full four seasons with very temperate climates; in the northwest, winters are cold with heavy snowfall and subfreezing temperatures. Spring and fall are relatively mild, while summers are dry and hot. In the south, winters are mild, and the summers are sweltering, having average daily temperatures in July that exceed 38 °C (100.4 °F).

The best time to visit Iran:

In terms of weather, the best time to travel to Iran is between March and May and September to November. It’s nevertheless best to avoid traveling during the two weeks surrounding Nowruz; the Iranian New Year (March 18th to April 3rd), the ten days before Ashura (Religious holiday), and the month of Ramadan.
During the month of Ramadan, the ninth month of the Islamic calendar, when Muslims worldwide fast from dawn until sunset and abstain from eating, drinking, or smoking in public and within city limits, nearly all restaurants are closed during the day.
Nevertheless, we still have groups that visit during Ramadan, and in such cases, lunch is arranged at the hotel or in a private setting away from the public view.
Come sunset, all restaurants, food, and beverage vendors open shop and are open for service till the early hours before dawn.
Once more, to have the best memorable experience while visiting Iran, the best time to travel to Iran is between March and May and September to November.
Ski Season in Iran:
If you are interested in planning a ski trip to Iran, just like in Europe, the best period for skiing is from January to the end of March, when snow conditions are ideal; ski resorts generally open between the end of November and the beginning of May. In southern Iran, the ski season is shorter but usually still lasts until the end of March.
We hope to see you soon!