Being a vast country; Iran has regions with different temperatures even at a specific period of time. In fact it offers all sorts of climates and conditions. Depending on the season and the areas you plan to visit, you need to pack accordingly. 

Spring and autumn are quite short seasons in Iran, between the heat of summer and the more changeable and often cold weather of winter. Winter temperature often falls below freezing, while summers, can be unpleasantly hot, especially for women. In the northern coastal areas of the Caspian Sea climate is mild and humid. The southern parts and the Persian Gulf region have always a hotter climate than Central Iran. North West Iran is about 10- 15C cooler than the rest of Iran. 

All seasons have their own attractions. Thanks to such a diverse geography, you can have all kinds of climates in any season. Weather can be humid, dry, hot or cold depending on where you are. Therefore you can enjoy from winter and summer sports at the same time within a few hours. 

Generally spring and autumn are the best time to visit Iran even if the weather may, on occasions, be a little uncertain with short lapses into either the cold of winter or the heat of summer. More accurate is mid-April to early June, and late September to early November. These times avoid the long, cold northern winter, the Iranian New Year (late March) and the summer. 

•    If the heat doesn't keep you away, take note that prices along the Caspian coast can quadruple during summer. 

•    If you would like to go skiing then you should plan your visit sometime between November and March. 

•    The rose and rosewater festival takes place between April and June. The hunting season in Iran commences on 23 October and lasts until 19 February; however the high season of foreign hunters normally coincides with January holidays. 

•    Many people prefer not to visit Iran during Ramazan, the Muslim month of fasting, when most restaurants are closed between dawn and dusk. They function only at select hours in the evening, making it difficult for travellers to arrange for regular meals