Bahār climate — normals and trends
Bahār (Iran) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 11.6 °C and it receives 292 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 (26.1 °C on average) and the coldest is January (-3.2 °C). Rainfall peaks in March.
Bahār averages 114 frost days, 86 hot days (≥ 30 °C) and 62 rainy days per year.
Bahār has warmed by +3.6 °C between 1940 and 2025, or +0.42 °C per decade. This trend is statistically significant.
The number of frost days there went from about 138 to 90 per year over the period.
The hottest day of the period reached 40.7 °C (on 25 July 2013) and the coldest -28.1 °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
BahārHamadan Province
- coords
- 34.91°, 48.44°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.6°C
Average daily high
18.6°C
Average daily low
5.1°C
Annual rainfall
292mm
Sunshine / day
11.0h
Mean relative humidity
48%
Average peak wind
16.2km/h
Seasonal range
29.3°C
Frost days (< 0 °C)
114 d/yr
Hot days (≥ 30 °C)
86 d/yr
Rainy days (≥ 1 mm)
62 d/yr
Annual snowfall
64.8 cm
Average feels-like high
15.4 °C
Average feels-like low
1.8 °C
Average peak gust
34.7 km/h
Tropical nights (≥ 20 °C)
8 d/yr
Solar radiation
20.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.6 °C
since 1940
+0.4 °C per decade · r² = 0.53 · 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
25 July 2013
Coldest day
-28.1 °C
20 January 1964
Wettest day
48 mm
25 February 2020
Windiest day
54.6 km/h
7 April 1964
Strongest gust
101.9 km/h
7 April 1964
Hottest feels-like
39.1 °C
10 August 2024
Coldest feels-like
-33.3 °C
20 January 1964
Snowiest day
18.3 cm
13 December 2013
Sunniest day
14.0 h
18 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 | 5.9 °C | +3.4 °C | 25 mm | -6 mm |
| Feb | 3.7 °C | -1.1 °C | 46 mm | +9 mm |
| Mar | 13.7 °C | +3.5 °C | 68 mm | +14 mm |
| Apr | 20.6 °C | +3.9 °C | 25 mm | -27 mm |
| May | 28.0 °C | +5.0 °C | 17 mm | -13 mm |
| Jun | 32.0 °C | +1.7 °C | 0 mm | -4 mm |
| Jul | 35.4 °C | +1.3 °C | 1 mm | 0 mm |
| Aug | 35.9 °C | +2.6 °C | 0 mm | -1 mm |
| Sep | 30.0 °C | +1.2 °C | 0 mm | -1 mm |
| Oct | 24.9 °C | +3.8 °C | 0 mm | -16 mm |
| Nov | 17.1 °C | +4.8 °C | 1 mm | -31 mm |
| Dec | 7.9 °C | +2.2 °C | 48 mm | +15 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 Bahār?
Bahār has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 11.6 °C and it receives 292 mm of precipitation per year.
What is the hottest day ever recorded in Bahār?
The hottest day measured in Bahār between 1940 and 2025 was 25 July 2013, reaching 40.7 °C.
What is the coldest day in Bahār?
The coldest day measured in Bahār between 1940 and 2025 was 20 January 1964, at -28.1 °C.
Does it snow in Bahār?
Yes. Bahār gets on average 64.8 cm of snow per year and has around 114 frost days.
Has the climate of Bahār warmed?
Yes: Bahār warmed by +3.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bahār?
The wettest day measured in Bahār between 1940 and 2025 was 25 February 2020, with 48 mm of rain in 24 hours.
What was the windiest day in Bahār?
The windiest day measured in Bahār between 1940 and 2025 was 7 April 1964, with winds reaching 54.6 km/h.
What is the warmest month in Bahār?
The warmest month in Bahār is July (26.1 °C on average); the coldest is January (-3.2 °C).
How much does it rain in Bahār?
Bahār receives on average 292 mm of precipitation per year, spread over about 62 rainy days.
Is it sunny in Bahār?
Bahār 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 Bahār?
The heaviest 24-hour snowfall measured in Bahār between 1940 and 2025 was 13 December 2013, with 18.3 cm.
Are there tropical nights in Bahār?
Yes: Bahār has on average 8 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bahār?
In Bahār, between 1940 and 2025, the highest apparent temperature reached 39.1 °C on 10 August 2024, and the lowest was -33.3 °C on 20 January 1964.
Compare Bahār with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bahār