Ḩasanābād climate — normals and trends
Ḩasanābād (Iran) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 18.4 °C and it receives 157 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 (32.9 °C on average) and the coldest is January (3.3 °C). Rainfall peaks in March.
Ḩasanābād averages 50 frost days, 147 hot days (≥ 30 °C) and 35 rainy days per year.
Ḩasanābād has warmed by +3.2 °C between 1940 and 2025, or +0.37 °C per decade. This trend is statistically significant.
The number of frost days there went from about 70 to 30 per year over the period.
The hottest day of the period reached 46.6 °C (on 18 July 2003) and the coldest -20.7 °C (on 10 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
ḨasanābādTehran
- coords
- 35.37°, 51.23°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.4°C
Average daily high
24.7°C
Average daily low
12.0°C
Annual rainfall
157mm
Sunshine / day
10.8h
Mean relative humidity
40%
Average peak wind
16.0km/h
Seasonal range
29.6°C
Frost days (< 0 °C)
50 d/yr
Hot days (≥ 30 °C)
147 d/yr
Rainy days (≥ 1 mm)
35 d/yr
Annual snowfall
14.4 cm
Average feels-like high
21.9 °C
Average feels-like low
8.8 °C
Average peak gust
30.8 km/h
Tropical nights (≥ 20 °C)
105 d/yr
Solar radiation
19.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.2 °C
since 1940
+0.4 °C per decade · r² = 0.51 · 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
46.6 °C
18 July 2003
Coldest day
-20.7 °C
10 January 1949
Wettest day
36 mm
25 March 1991
Windiest day
48.4 km/h
25 April 1978
Strongest gust
90.7 km/h
7 April 1964
Hottest feels-like
44.4 °C
19 July 2005
Coldest feels-like
-26.3 °C
10 January 1949
Snowiest day
20.1 cm
3 February 1968
Sunniest day
13.4 h
21 June 1940
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 | 12.2 °C | +3.1 °C | 17 mm | -4 mm |
| Feb | 11.7 °C | -0.3 °C | 14 mm | -6 mm |
| Mar | 20.5 °C | +3.0 °C | 22 mm | -8 mm |
| Apr | 28.8 °C | +4.5 °C | 9 mm | -16 mm |
| May | 35.4 °C | +4.5 °C | 6 mm | -7 mm |
| Jun | 37.5 °C | +0.6 °C | 2 mm | +0 mm |
| Jul | 41.0 °C | +1.5 °C | 0 mm | -1 mm |
| Aug | 40.1 °C | +2.0 °C | 0 mm | -1 mm |
| Sep | 34.9 °C | +1.2 °C | 0 mm | -1 mm |
| Oct | 29.9 °C | +3.6 °C | 0 mm | -6 mm |
| Nov | 21.2 °C | +3.9 °C | 0 mm | -17 mm |
| Dec | 12.5 °C | +1.6 °C | 9 mm | -11 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 Ḩasanābād?
Ḩasanābād has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 18.4 °C and it receives 157 mm of precipitation per year.
What is the hottest day ever recorded in Ḩasanābād?
The hottest day measured in Ḩasanābād between 1940 and 2025 was 18 July 2003, reaching 46.6 °C.
What is the coldest day in Ḩasanābād?
The coldest day measured in Ḩasanābād between 1940 and 2025 was 10 January 1949, at -20.7 °C.
Does it snow in Ḩasanābād?
Yes. Ḩasanābād gets on average 14.4 cm of snow per year and has around 50 frost days.
Has the climate of Ḩasanābād warmed?
Yes: Ḩasanābād warmed by +3.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ḩasanābād?
The wettest day measured in Ḩasanābād between 1940 and 2025 was 25 March 1991, with 36 mm of rain in 24 hours.
What was the windiest day in Ḩasanābād?
The windiest day measured in Ḩasanābād between 1940 and 2025 was 25 April 1978, with winds reaching 48.4 km/h.
What is the warmest month in Ḩasanābād?
The warmest month in Ḩasanābād is July (32.9 °C on average); the coldest is January (3.3 °C).
How much does it rain in Ḩasanābād?
Ḩasanābād receives on average 157 mm of precipitation per year, spread over about 35 rainy days.
Is it sunny in Ḩasanābād?
Ḩasanābād gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ḩasanābād?
The heaviest 24-hour snowfall measured in Ḩasanābād between 1940 and 2025 was 3 February 1968, with 20.1 cm.
Are there tropical nights in Ḩasanābād?
Yes: Ḩasanābād has on average 105 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ḩasanābād?
In Ḩasanābād, between 1940 and 2025, the highest apparent temperature reached 44.4 °C on 19 July 2005, and the lowest was -26.3 °C on 10 January 1949.
Compare Ḩasanābād with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ḩasanābād