Qīāmdasht climate — normals and trends
Qīāmdasht (Iran) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 16.0 °C and it receives 228 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 (30.5 °C on average) and the coldest is January (1.3 °C). Rainfall peaks in March.
Qīāmdasht averages 68 frost days, 112 hot days (≥ 30 °C) and 47 rainy days per year.
Qīāmdasht has warmed by +2.9 °C between 1940 and 2025, or +0.34 °C per decade. This trend is statistically significant.
The number of frost days there went from about 91 to 45 per year over the period.
The hottest day of the period reached 42.1 °C (on 24 July 2013) and the coldest -21.6 °C (on 20 January 1964).
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
QīāmdashtTehran
- coords
- 35.52°, 51.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.0°C
Average daily high
21.4°C
Average daily low
10.4°C
Annual rainfall
228mm
Sunshine / day
10.9h
Mean relative humidity
40%
Average peak wind
11.5km/h
Seasonal range
29.2°C
Frost days (< 0 °C)
68 d/yr
Hot days (≥ 30 °C)
112 d/yr
Rainy days (≥ 1 mm)
47 d/yr
Annual snowfall
25.1 cm
Average feels-like high
19.0 °C
Average feels-like low
7.3 °C
Average peak gust
28.2 km/h
Tropical nights (≥ 20 °C)
88 d/yr
Solar radiation
19.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °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
42.1 °C
24 July 2013
Coldest day
-21.6 °C
20 January 1964
Wettest day
35 mm
27 March 2007
Windiest day
36.6 km/h
25 April 1978
Strongest gust
88.6 km/h
7 April 1964
Hottest feels-like
41.1 °C
27 July 2024
Coldest feels-like
-26.8 °C
20 January 1964
Snowiest day
12.7 cm
25 December 1990
Sunniest day
13.3 h
29 June 2023
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 | 9.4 °C | +3.0 °C | 12 mm | -18 mm |
| Feb | 8.7 °C | 0.0 °C | 18 mm | -15 mm |
| Mar | 17.1 °C | +3.3 °C | 35 mm | -11 mm |
| Apr | 25.1 °C | +4.5 °C | 15 mm | -17 mm |
| May | 31.6 °C | +4.5 °C | 5 mm | -10 mm |
| Jun | 33.9 °C | +0.7 °C | 2 mm | -0 mm |
| Jul | 37.6 °C | +1.6 °C | 1 mm | -0 mm |
| Aug | 36.5 °C | +1.9 °C | 0 mm | -1 mm |
| Sep | 31.4 °C | +1.2 °C | 0 mm | -2 mm |
| Oct | 26.5 °C | +3.5 °C | 0 mm | -10 mm |
| Nov | 18.6 °C | +4.1 °C | 0 mm | -27 mm |
| Dec | 10.3 °C | +1.8 °C | 24 mm | -5 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 Qīāmdasht?
Qīāmdasht has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 16.0 °C and it receives 228 mm of precipitation per year.
What is the hottest day ever recorded in Qīāmdasht?
The hottest day measured in Qīāmdasht between 1940 and 2025 was 24 July 2013, reaching 42.1 °C.
What is the coldest day in Qīāmdasht?
The coldest day measured in Qīāmdasht between 1940 and 2025 was 20 January 1964, at -21.6 °C.
Does it snow in Qīāmdasht?
Yes. Qīāmdasht gets on average 25.1 cm of snow per year and has around 68 frost days.
Has the climate of Qīāmdasht warmed?
Yes: Qīāmdasht warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Qīāmdasht?
The wettest day measured in Qīāmdasht between 1940 and 2025 was 27 March 2007, with 35 mm of rain in 24 hours.
What was the windiest day in Qīāmdasht?
The windiest day measured in Qīāmdasht between 1940 and 2025 was 25 April 1978, with winds reaching 36.6 km/h.
What is the warmest month in Qīāmdasht?
The warmest month in Qīāmdasht is July (30.5 °C on average); the coldest is January (1.3 °C).
How much does it rain in Qīāmdasht?
Qīāmdasht receives on average 228 mm of precipitation per year, spread over about 47 rainy days.
Is it sunny in Qīāmdasht?
Qīāmdasht gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
What is the biggest single-day snowfall in Qīāmdasht?
The heaviest 24-hour snowfall measured in Qīāmdasht between 1940 and 2025 was 25 December 1990, with 12.7 cm.
Are there tropical nights in Qīāmdasht?
Yes: Qīāmdasht has on average 88 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Qīāmdasht?
In Qīāmdasht, between 1940 and 2025, the highest apparent temperature reached 41.1 °C on 27 July 2024, and the lowest was -26.8 °C on 20 January 1964.
Compare Qīāmdasht with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Qīāmdasht