in Iran: when to go?
aride à semi-aride climate
Iran offers an arid continental climate with four distinct seasons, ideal for discovering its architectural treasures and desert landscapes. Spring (April-May) and autumn (October-November) are the perfect periods to visit the country, with mild temperatures and generally clear skies. Winter can be harsh, particularly in Tehran and mountainous regions, but remains bearable in the south. Summer becomes scorching with temperatures exceeding 40°C in desert areas, making visits grueling despite low humidity. Rainfall remains modest throughout the year, concentrated mainly in winter and early spring. To fully enjoy the sites of Persepolis, Isfahan, or Tehran's bazaars, absolutely prioritize the intermediate seasons, which offer the perfect balance between climate comfort and optimal viewing conditions.
- Best period
- April to May, October to November
- Good alternatives
- December to March, June, September
- Scorching summer
- July to August
Year-round overview
Select a month to plan your trip
Climate in numbers
Monthly temperatures and precipitation
Temperature (°C)
Precipitation (mm)
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Climate zones
Climate varies by region. Discover the unique characteristics of each zone.
General climate Iran
IdealIranian plateau with an arid continental climate, influenced by altitude and continentality. Mountain ranges create sign...
Historic centre
IdealShiraz South
IdealCentral Deserts
IdealNorth Caspian
FairModern Tehran
IdealMonth by month
Find detailed climate information for each month of the year.
Temperature
-4° — 14°C
Precipitation
48 mm
Average temperature
1.2°C
Rating
Average
By climate zone
Cool temperatures requiring warm clothing. Snow possible in the north.
Temperature
-1° — 16°C
Precipitation
42 mm
Average temperature
1.6°C
Rating
Fair
By climate zone
Gradual improvement of conditions. Longer but cooler days.
Temperature
4° — 21°C
Precipitation
40 mm
Average temperature
2.3°C
Rating
Good
By climate zone
Pleasant daytime temperatures. Ideal for starting cultural visits.
Temperature
9° — 26°C
Precipitation
31 mm
Average temperature
3.2°C
Rating
Ideal
By climate zone
Perfect conditions for all types of visits. Clear skies and ideal temperatures.
Temperature
13° — 33°C
Precipitation
18 mm
Average temperature
4.2°C
Rating
Ideal
By climate zone
Excellent period before the intense heat. Sun protection recommended.
Temperature
17° — 39°C
Precipitation
9 mm
Average temperature
5.1°C
Rating
Fair
By climate zone
Significant heat but manageable. Morning visits recommended.
Temperature
20° — 42°C
Precipitation
8 mm
Average temperature
5.7°C
Rating
Average
By climate zone
Extreme heat making visits difficult. Avoid outdoor activities.
Temperature
19° — 41°C
Precipitation
9 mm
Average temperature
5.5°C
Rating
Average
By climate zone
Consistently high temperatures. Least favorable period for travel.
Temperature
14° — 36°C
Precipitation
15 mm
Average temperature
4.6°C
Rating
Good
By climate zone
Progressive improvement but still warm. End of month more pleasant.
Temperature
8° — 28°C
Precipitation
31 mm
Average temperature
3.6°C
Rating
Ideal
By climate zone
Back to ideal conditions. Perfect for visiting sites and monuments.
Temperature
2° — 20°C
Precipitation
40 mm
Average temperature
2.4°C
Rating
Good
By climate zone
Last beautiful season before winter. Pack light layered clothing.
Temperature
-2° — 14°C
Precipitation
47 mm
Average temperature
1.5°C
Rating
Average
By climate zone
Cool temperatures requiring warm clothing. Short days.
Frequently asked questions
Everything about the climate and the best time to visit in Iran
The best months to visit in Iran are April, May, October, November. This period offers favourable weather and ideal conditions for exploring the country at its best.
The arid climate of Iran alternates between very hot summers (months to avoid for comfort: July, August) and mild to cool winters. The average annual temperature is 18.5°C. Desert nights can be surprisingly cool, even in summer.
The best time to explore the desert spans April, May, October, November. Comfortable daytime temperatures, starlit nights, and dunes accessible without extreme heat. Avoid the peak summer heat (July, August).
Yes, but with precautions: early morning and late afternoon activities, constant hydration, air-conditioned accommodations. Coastal cities remain pleasant. Treks and desert expeditions are best avoided.
Yes, especially in winter and for nights in the desert. The temperature difference between day and night can exceed 20°C. A warm jacket and sweater are essential outside the summer season.
If your travel dates don't match the ideal season in in Iran, the Nomadays network brings together more than 100 local agencies worldwide. Get in touch to find out which destination would be ideal for your dates.
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