Bījār climate — normals and trends
Bījār (Iran) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 10.0 °C and it receives 322 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 (24.4 °C on average) and the coldest is January (-5.2 °C). Rainfall peaks in April.
Bījār averages 131 frost days, 73 hot days (≥ 30 °C) and 67 rainy days per year.
Bījār has warmed by +4.1 °C between 1940 and 2025, or +0.48 °C per decade. This trend is statistically significant.
The number of frost days there went from about 154 to 108 per year over the period.
The hottest day of the period reached 40.8 °C (on 12 July 1998) and the coldest -30.0 °C (on 24 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
BījārKurdistan Province
- coords
- 35.87°, 47.61°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.0°C
Average daily high
17.2°C
Average daily low
3.5°C
Annual rainfall
322mm
Sunshine / day
11.0h
Mean relative humidity
54%
Average peak wind
18.0km/h
Seasonal range
29.6°C
Frost days (< 0 °C)
131 d/yr
Hot days (≥ 30 °C)
73 d/yr
Rainy days (≥ 1 mm)
67 d/yr
Annual snowfall
79.9 cm
Average feels-like high
13.8 °C
Average feels-like low
0.3 °C
Average peak gust
36.7 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
20.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+4.1 °C
since 1940
+0.5 °C per decade · r² = 0.56 · 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
40.8 °C
12 July 1998
Coldest day
-30.0 °C
24 January 1964
Wettest day
41 mm
25 February 2020
Windiest day
50.2 km/h
9 November 1956
Strongest gust
106.2 km/h
4 March 2013
Hottest feels-like
38.8 °C
12 July 1998
Coldest feels-like
-35.2 °C
24 January 1964
Snowiest day
18.9 cm
17 January 2022
Sunniest day
14.0 h
9 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 | 4.6 °C | +4.6 °C | 19 mm | -15 mm |
| Feb | -0.8 °C | -2.8 °C | 36 mm | -2 mm |
| Mar | 12.7 °C | +4.3 °C | 62 mm | +7 mm |
| Apr | 18.7 °C | +3.0 °C | 53 mm | -7 mm |
| May | 26.2 °C | +4.4 °C | 25 mm | -12 mm |
| Jun | 30.7 °C | +1.8 °C | 2 mm | -3 mm |
| Jul | 34.2 °C | +1.0 °C | 0 mm | -1 mm |
| Aug | 35.8 °C | +3.3 °C | 0 mm | -1 mm |
| Sep | 28.6 °C | +0.8 °C | 0 mm | -2 mm |
| Oct | 23.8 °C | +3.6 °C | 0 mm | -19 mm |
| Nov | 16.2 °C | +4.8 °C | 9 mm | -27 mm |
| Dec | 6.8 °C | +2.8 °C | 58 mm | +24 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 Bījār?
Bījār has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 10.0 °C and it receives 322 mm of precipitation per year.
What is the hottest day ever recorded in Bījār?
The hottest day measured in Bījār between 1940 and 2025 was 12 July 1998, reaching 40.8 °C.
What is the coldest day in Bījār?
The coldest day measured in Bījār between 1940 and 2025 was 24 January 1964, at -30.0 °C.
Does it snow in Bījār?
Yes. Bījār gets on average 79.9 cm of snow per year and has around 131 frost days.
Has the climate of Bījār warmed?
Yes: Bījār warmed by +4.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bījār?
The wettest day measured in Bījār between 1940 and 2025 was 25 February 2020, with 41 mm of rain in 24 hours.
What was the windiest day in Bījār?
The windiest day measured in Bījār between 1940 and 2025 was 9 November 1956, with winds reaching 50.2 km/h.
What is the warmest month in Bījār?
The warmest month in Bījār is July (24.4 °C on average); the coldest is January (-5.2 °C).
How much does it rain in Bījār?
Bījār receives on average 322 mm of precipitation per year, spread over about 67 rainy days.
Is it sunny in Bījār?
Bījār 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 Bījār?
The heaviest 24-hour snowfall measured in Bījār between 1940 and 2025 was 17 January 2022, with 18.9 cm.
Are there tropical nights in Bījār?
Yes: Bījār has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bījār?
In Bījār, between 1940 and 2025, the highest apparent temperature reached 38.8 °C on 12 July 1998, and the lowest was -35.2 °C on 24 January 1964.
Compare Bījār with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bījār