Iran is a vast country with different climate zones; therefore, you can travel in every season you want. Whether it is summer, winter, spring or autumn, Iran welcomes you.
In spring, you can travel to different parts of the country since the weather is really enjoyable from west to east and north to south.
In summer, it is recommended to visit the north, northwest and northeast, the west, and middle of the country (e.g. Isfahan) since the weather there is better than the southern or southeastern of Iran. Southern parts have hot weather in summer.
In autumn, the weather is bearable in all directions. All parts of the country, therefore, can be visited. However, the most recommended parts are south and center of Iran since the north, northwest and northeast enjoy rain most of the time in this season.
In winter, the north, northwest, northeast and west experience snow while in the south sun shines and sometimes it is rainy. The center also enjoys rainy weather and in some parts it is snowing, with cool days and cold nights.