Tehran Weather History
Iran · Asia · Weather data 1976–today
Tehran sits 3973km from the equator, 2040m above sea level. That combination gives it a climate with cold winters, hot dry summers, and very little rain (Cold semi-arid climate). Its record high is 43.2°C, set 2024-08-07, its record low -22.6°C, set 2008-01-08.
Data through August 4, 2026.
Frequently asked questions about the weather in Tehran
What is the hottest temperature ever recorded in Tehran?
The highest temperature in this record for Tehran is 43.2°C, measured on 2024-08-07. That is a recorded daily value from Tehran's own series covering 1976 to 2025, not an estimate or a regional average.
What is the coldest temperature ever recorded in Tehran?
The lowest temperature in this record for Tehran is -22.6°C, measured on 2008-01-08. Together with the heat record above, that spans the full range this city has actually experienced across 1976 to 2025.
How much rain does Tehran get a year?
Tehran averages 274mm of precipitation a year, spread across roughly 51 days with at least 1mm. That average is taken over 50 complete calendar years, so one exceptionally wet or dry year does not set the figure.
What was the wettest day on record in Tehran?
On 2020-02-25, 41.3mm fell on Tehran, the highest single-day total in this series. For scale, that is roughly 15% of what the city receives in an average full year, in one day.
How many hours of sunshine does Tehran get a year?
Tehran averages 3930 sunshine hours a year, which works out to about 10.8 hours a day across the whole year. Sunshine hours measure the time direct sunlight actually reaches the ground, not simply how long it is light.
How warm are summers and how cold are winters in Tehran?
Across the summer months Tehran averages a daytime high near 34.6°C, while winter nights average -3.2°C. The seasons here are set from Tehran's position relative to the equator rather than a fixed northern-hemisphere calendar.
What is the strongest wind recorded in Tehran?
The strongest wind speed recorded in Tehran is 40 km/h, on 1978-04-25. That is the daily maximum sustained wind rather than the peak gust, which typically runs higher still.
