Shahreẕā climate — normals and trends
Shahreẕā (Iran) has a cold desert climate (BWk) under the Köppen-Geiger classification. Its mean annual temperature is 13.4 °C and it receives 121 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (26.7 °C on average) and the coldest is January (-0.8 °C). Rainfall peaks in March.
Shahreẕā averages 105 frost days, 87 hot days (≥ 30 °C) and 27 rainy days per year.
Shahreẕā has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 119 to 91 per year over the period.
The hottest day of the period reached 40.2 °C (on 2 July 2025) and the coldest -22.4 °C (on 11 January 1949).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
ShahreẕāIsfahan
- coords
- 32.01°, 51.86°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.4°C
Average daily high
20.2°C
Average daily low
6.5°C
Annual rainfall
121mm
Sunshine / day
11.1h
Mean relative humidity
38%
Average peak wind
15.7km/h
Seasonal range
27.5°C
Frost days (< 0 °C)
105 d/yr
Hot days (≥ 30 °C)
87 d/yr
Rainy days (≥ 1 mm)
27 d/yr
Annual snowfall
25.5 cm
Average feels-like high
17.1 °C
Average feels-like low
2.9 °C
Average peak gust
34.7 km/h
Tropical nights (≥ 20 °C)
20 d/yr
Solar radiation
21.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.47 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
40.2 °C
2 July 2025
Coldest day
-22.4 °C
11 January 1949
Wettest day
45 mm
20 December 1986
Windiest day
51.9 km/h
19 April 1973
Strongest gust
113.8 km/h
26 March 2003
Hottest feels-like
38.6 °C
10 July 1991
Coldest feels-like
-28.0 °C
11 January 1949
Snowiest day
18.4 cm
20 December 1986
Sunniest day
13.0 h
23 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 8.1 °C | +2.2 °C | 24 mm | +4 mm |
| Feb | 10.7 °C | +2.1 °C | 4 mm | -13 mm |
| Mar | 16.2 °C | +2.7 °C | 30 mm | +10 mm |
| Apr | 24.4 °C | +5.2 °C | 5 mm | -12 mm |
| May | 30.4 °C | +5.2 °C | 4 mm | -5 mm |
| Jun | 33.8 °C | +2.6 °C | 1 mm | +0 mm |
| Jul | 35.5 °C | +2.3 °C | 0 mm | -1 mm |
| Aug | 33.6 °C | +1.7 °C | 0 mm | -0 mm |
| Sep | 31.4 °C | +2.8 °C | 0 mm | -0 mm |
| Oct | 26.1 °C | +4.0 °C | 0 mm | -3 mm |
| Nov | 17.9 °C | +3.6 °C | 1 mm | -13 mm |
| Dec | 9.0 °C | +0.5 °C | 56 mm | +37 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Shahreẕā?
Shahreẕā has a cold desert climate (Köppen BWk). Over 1940-2025, the average annual temperature is 13.4 °C and it receives 121 mm of precipitation per year.
What is the hottest day ever recorded in Shahreẕā?
The hottest day measured in Shahreẕā between 1940 and 2025 was 2 July 2025, reaching 40.2 °C.
What is the coldest day in Shahreẕā?
The coldest day measured in Shahreẕā between 1940 and 2025 was 11 January 1949, at -22.4 °C.
Does it snow in Shahreẕā?
Yes. Shahreẕā gets on average 25.5 cm of snow per year and has around 105 frost days.
Has the climate of Shahreẕā warmed?
Yes: Shahreẕā warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Shahreẕā?
The wettest day measured in Shahreẕā between 1940 and 2025 was 20 December 1986, with 45 mm of rain in 24 hours.
What was the windiest day in Shahreẕā?
The windiest day measured in Shahreẕā between 1940 and 2025 was 19 April 1973, with winds reaching 51.9 km/h.
What is the warmest month in Shahreẕā?
The warmest month in Shahreẕā is July (26.7 °C on average); the coldest is January (-0.8 °C).
How much does it rain in Shahreẕā?
Shahreẕā receives on average 121 mm of precipitation per year, spread over about 27 rainy days.
Is it sunny in Shahreẕā?
Shahreẕā gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
What is the biggest single-day snowfall in Shahreẕā?
The heaviest 24-hour snowfall measured in Shahreẕā between 1940 and 2025 was 20 December 1986, with 18.4 cm.
Are there tropical nights in Shahreẕā?
Yes: Shahreẕā has on average 20 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Shahreẕā?
In Shahreẕā, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 10 July 1991, and the lowest was -28.0 °C on 11 January 1949.
Compare Shahreẕā with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Shahreẕā