Khalkhāl climate — normals and trends
Khalkhāl (Iran) has a warm-summer mediterranean continental climate (Dsb) under the Köppen-Geiger classification. Its mean annual temperature is 7.8 °C and it receives 651 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 (19.0 °C on average) and the coldest is January (-5.6 °C). Rainfall peaks in April.
Khalkhāl averages 130 frost days, 7 hot days (≥ 30 °C) and 119 rainy days per year.
Khalkhāl has warmed by +3.5 °C between 1940 and 2025, or +0.41 °C per decade. This trend is statistically significant.
The number of frost days there went from about 150 to 110 per year over the period.
The hottest day of the period reached 36.2 °C (on 16 August 2015) and the coldest -27.5 °C (on 21 December 1948).
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
KhalkhālArdabil Province
- coords
- 37.62°, 48.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.8°C
Average daily high
13.2°C
Average daily low
3.1°C
Annual rainfall
651mm
Sunshine / day
10.5h
Mean relative humidity
71%
Average peak wind
10.3km/h
Seasonal range
24.6°C
Frost days (< 0 °C)
130 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
197.2 cm
Average feels-like high
11.4 °C
Average feels-like low
0.7 °C
Average peak gust
36.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
18.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.5 °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
36.2 °C
16 August 2015
Coldest day
-27.5 °C
21 December 1948
Wettest day
49 mm
19 October 1984
Windiest day
81.1 km/h
23 November 1978
Strongest gust
118.1 km/h
17 March 2014
Hottest feels-like
36.7 °C
29 July 1973
Coldest feels-like
-32.1 °C
21 December 1948
Snowiest day
29.5 cm
19 October 1984
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 | 2.8 °C | +4.7 °C | 24 mm | -33 mm |
| Feb | 0.7 °C | +0.8 °C | 101 mm | +38 mm |
| Mar | 11.6 °C | +6.2 °C | 78 mm | -7 mm |
| Apr | 16.9 °C | +3.8 °C | 105 mm | +18 mm |
| May | 22.6 °C | +3.8 °C | 43 mm | -28 mm |
| Jun | 24.0 °C | +1.0 °C | 13 mm | -17 mm |
| Jul | 27.5 °C | +2.1 °C | 13 mm | -4 mm |
| Aug | 29.4 °C | +3.8 °C | 12 mm | -6 mm |
| Sep | 23.1 °C | +0.6 °C | 38 mm | +4 mm |
| Oct | 20.5 °C | +3.9 °C | 20 mm | -46 mm |
| Nov | 14.7 °C | +6.2 °C | 6 mm | -62 mm |
| Dec | 5.3 °C | +4.0 °C | 85 mm | +27 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 Khalkhāl?
Khalkhāl has a warm-summer mediterranean continental climate (Köppen Dsb). Over 1940-2025, the average annual temperature is 7.8 °C and it receives 651 mm of precipitation per year.
What is the hottest day ever recorded in Khalkhāl?
The hottest day measured in Khalkhāl between 1940 and 2025 was 16 August 2015, reaching 36.2 °C.
What is the coldest day in Khalkhāl?
The coldest day measured in Khalkhāl between 1940 and 2025 was 21 December 1948, at -27.5 °C.
Does it snow in Khalkhāl?
Yes. Khalkhāl gets on average 197.2 cm of snow per year and has around 130 frost days.
Has the climate of Khalkhāl warmed?
Yes: Khalkhāl warmed by +3.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Khalkhāl?
The wettest day measured in Khalkhāl between 1940 and 2025 was 19 October 1984, with 49 mm of rain in 24 hours.
What was the windiest day in Khalkhāl?
The windiest day measured in Khalkhāl between 1940 and 2025 was 23 November 1978, with winds reaching 81.1 km/h.
What is the warmest month in Khalkhāl?
The warmest month in Khalkhāl is July (19.0 °C on average); the coldest is January (-5.6 °C).
How much does it rain in Khalkhāl?
Khalkhāl receives on average 651 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Khalkhāl?
Khalkhāl gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
What is the biggest single-day snowfall in Khalkhāl?
The heaviest 24-hour snowfall measured in Khalkhāl between 1940 and 2025 was 19 October 1984, with 29.5 cm.
Are there tropical nights in Khalkhāl?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Khalkhāl.
What was the most extreme apparent temperature in Khalkhāl?
In Khalkhāl, between 1940 and 2025, the highest apparent temperature reached 36.7 °C on 29 July 1973, and the lowest was -32.1 °C on 21 December 1948.
Compare Khalkhāl with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Khalkhāl