Climate in Iran

Iran has a highly diverse climate, with major differences between regions. Annual temperatures range from lows of -15°C in the coldest regions to highs of 29°C in the warmest areas. Annual precipitation ranges from 0mm in drier regions to 367mm in wetter parts of the country. Some regions receive significant snowfall, with up to 351cm annually, while other areas see little to none. The warmest areas are hot year-round while the coldest regions remain very cold, making Iran a country of sharp climate contrasts.

Temperature patterns across Iran vary by region, with distinct differences between areas. The Northwest is the warmest part of the country, with peak temperatures reaching 29°C and an annual average of 27°C. Cooler conditions are found in the Northwest, where winter lows drop to -15°C and an annual average of -8°C. This 35°C difference in annual averages between regions means travellers can experience vastly different conditions depending on which part of Iran they visit. Regional temperature differences remain relatively consistent across seasons, with around 36°C of variation in both summer and winter. For example, Rasht in the Gilan Province averages 27°C annually, while Orūmīyeh in the West Azerbaijan Province averages -8°C.

Iran sees notable variation in rainfall across its regions, ranging from 0mm to 367mm per year. The Northwest receives the most rainfall, at approximately 367mm annually. The Northwest is the driest, with around 0mm per year. Rainfall is distributed fairly evenly across the seasons, with no strong wet or dry period in most regions. The South sees the most snowfall, with up to 351cm annually, while other parts of the country receive little to none. Travellers should pack rain gear when visiting wetter areas, while drier regions offer more favourable conditions throughout the year.