Najafābād climate — normals and trends
Najafābād (Iran) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 13.9 °C and it receives 144 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 (27.8 °C on average) and the coldest is January (-1.2 °C). Rainfall peaks in March.
Najafābād averages 105 frost days, 100 hot days (≥ 30 °C) and 34 rainy days per year.
Najafābād has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 122 to 88 per year over the period.
The hottest day of the period reached 40.7 °C (on 3 July 2025) and the coldest -26.1 °C (on 29 January 1950).
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
NajafābādIsfahan
- coords
- 32.63°, 51.37°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.9°C
Average daily high
20.7°C
Average daily low
7.0°C
Annual rainfall
144mm
Sunshine / day
11.0h
Mean relative humidity
38%
Average peak wind
16.5km/h
Seasonal range
29.0°C
Frost days (< 0 °C)
105 d/yr
Hot days (≥ 30 °C)
100 d/yr
Rainy days (≥ 1 mm)
34 d/yr
Annual snowfall
27.2 cm
Average feels-like high
17.4 °C
Average feels-like low
3.2 °C
Average peak gust
34.5 km/h
Tropical nights (≥ 20 °C)
34 d/yr
Solar radiation
21.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.46 · 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
40.7 °C
3 July 2025
Coldest day
-26.1 °C
29 January 1950
Wettest day
50 mm
9 February 2006
Windiest day
47.0 km/h
20 April 1958
Strongest gust
104.8 km/h
26 March 2003
Hottest feels-like
38.8 °C
5 July 1999
Coldest feels-like
-32.2 °C
29 January 1950
Snowiest day
18.6 cm
20 December 1986
Sunniest day
13.2 h
20 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 | 8.5 °C | +2.7 °C | 19 mm | +1 mm |
| Feb | 10.8 °C | +2.0 °C | 6 mm | -13 mm |
| Mar | 16.8 °C | +2.9 °C | 33 mm | +9 mm |
| Apr | 24.7 °C | +4.8 °C | 12 mm | -9 mm |
| May | 31.1 °C | +5.2 °C | 6 mm | -9 mm |
| Jun | 34.3 °C | +2.2 °C | 1 mm | -1 mm |
| Jul | 36.4 °C | +2.0 °C | 0 mm | -0 mm |
| Aug | 34.9 °C | +1.8 °C | 0 mm | -0 mm |
| Sep | 32.0 °C | +2.5 °C | 1 mm | -0 mm |
| Oct | 26.6 °C | +3.9 °C | 0 mm | -6 mm |
| Nov | 18.4 °C | +4.0 °C | 0 mm | -17 mm |
| Dec | 8.5 °C | +0.2 °C | 60 mm | +40 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 Najafābād?
Najafābād has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 13.9 °C and it receives 144 mm of precipitation per year.
What is the hottest day ever recorded in Najafābād?
The hottest day measured in Najafābād between 1940 and 2025 was 3 July 2025, reaching 40.7 °C.
What is the coldest day in Najafābād?
The coldest day measured in Najafābād between 1940 and 2025 was 29 January 1950, at -26.1 °C.
Does it snow in Najafābād?
Yes. Najafābād gets on average 27.2 cm of snow per year and has around 105 frost days.
Has the climate of Najafābād warmed?
Yes: Najafābād warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Najafābād?
The wettest day measured in Najafābād between 1940 and 2025 was 9 February 2006, with 50 mm of rain in 24 hours.
What was the windiest day in Najafābād?
The windiest day measured in Najafābād between 1940 and 2025 was 20 April 1958, with winds reaching 47.0 km/h.
What is the warmest month in Najafābād?
The warmest month in Najafābād is July (27.8 °C on average); the coldest is January (-1.2 °C).
How much does it rain in Najafābād?
Najafābād receives on average 144 mm of precipitation per year, spread over about 34 rainy days.
Is it sunny in Najafābād?
Najafābād gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.
What is the biggest single-day snowfall in Najafābād?
The heaviest 24-hour snowfall measured in Najafābād between 1940 and 2025 was 20 December 1986, with 18.6 cm.
Are there tropical nights in Najafābād?
Yes: Najafābād has on average 34 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Najafābād?
In Najafābād, between 1940 and 2025, the highest apparent temperature reached 38.8 °C on 5 July 1999, and the lowest was -32.2 °C on 29 January 1950.
Compare Najafābād with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Najafābād