Qom climate — normals and trends
Qom (Iran) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 19.4 °C and it receives 135 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 (33.2 °C on average) and the coldest is January (4.4 °C). Rainfall peaks in March.
Qom averages 35 frost days, 156 hot days (≥ 30 °C) and 32 rainy days per year.
Qom has warmed by +3.1 °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 50 to 20 per year over the period.
The hottest day of the period reached 46.8 °C (on 16 July 1995) and the coldest -20.8 °C (on 2 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
QomQom Province
- coords
- 34.64°, 50.88°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.4°C
Average daily high
25.6°C
Average daily low
13.1°C
Annual rainfall
135mm
Sunshine / day
10.9h
Mean relative humidity
40%
Average peak wind
16.5km/h
Seasonal range
28.8°C
Frost days (< 0 °C)
35 d/yr
Hot days (≥ 30 °C)
156 d/yr
Rainy days (≥ 1 mm)
32 d/yr
Annual snowfall
10.7 cm
Average feels-like high
22.7 °C
Average feels-like low
10.4 °C
Average peak gust
30.9 km/h
Tropical nights (≥ 20 °C)
116 d/yr
Solar radiation
19.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °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
46.8 °C
16 July 1995
Coldest day
-20.8 °C
2 January 1949
Wettest day
39 mm
8 March 1986
Windiest day
54.4 km/h
7 April 1964
Strongest gust
94.0 km/h
7 April 1964
Hottest feels-like
45.2 °C
19 July 2005
Coldest feels-like
-25.9 °C
2 January 1949
Snowiest day
16.2 cm
3 February 1968
Sunniest day
13.4 h
25 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 | 12.9 °C | +2.9 °C | 14 mm | -7 mm |
| Feb | 12.8 °C | -0.4 °C | 13 mm | -6 mm |
| Mar | 21.7 °C | +2.7 °C | 16 mm | -9 mm |
| Apr | 30.1 °C | +4.3 °C | 8 mm | -10 mm |
| May | 36.4 °C | +4.3 °C | 9 mm | -1 mm |
| Jun | 38.1 °C | +0.6 °C | 3 mm | +1 mm |
| Jul | 41.4 °C | +1.5 °C | 0 mm | -0 mm |
| Aug | 40.8 °C | +2.1 °C | 0 mm | -0 mm |
| Sep | 35.7 °C | +1.3 °C | 0 mm | -1 mm |
| Oct | 30.8 °C | +3.7 °C | 0 mm | -5 mm |
| Nov | 21.7 °C | +3.6 °C | 0 mm | -15 mm |
| Dec | 12.7 °C | +1.1 °C | 21 mm | +1 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 Qom?
Qom has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 19.4 °C and it receives 135 mm of precipitation per year.
What is the hottest day ever recorded in Qom?
The hottest day measured in Qom between 1940 and 2025 was 16 July 1995, reaching 46.8 °C.
What is the coldest day in Qom?
The coldest day measured in Qom between 1940 and 2025 was 2 January 1949, at -20.8 °C.
Does it snow in Qom?
Yes. Qom gets on average 10.7 cm of snow per year and has around 35 frost days.
Has the climate of Qom warmed?
Yes: Qom warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Qom?
The wettest day measured in Qom between 1940 and 2025 was 8 March 1986, with 39 mm of rain in 24 hours.
What was the windiest day in Qom?
The windiest day measured in Qom between 1940 and 2025 was 7 April 1964, with winds reaching 54.4 km/h.
What is the warmest month in Qom?
The warmest month in Qom is July (33.2 °C on average); the coldest is January (4.4 °C).
How much does it rain in Qom?
Qom receives on average 135 mm of precipitation per year, spread over about 32 rainy days.
Is it sunny in Qom?
Qom gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
What is the biggest single-day snowfall in Qom?
The heaviest 24-hour snowfall measured in Qom between 1940 and 2025 was 3 February 1968, with 16.2 cm.
Are there tropical nights in Qom?
Yes: Qom has on average 116 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Qom?
In Qom, between 1940 and 2025, the highest apparent temperature reached 45.2 °C on 19 July 2005, and the lowest was -25.9 °C on 2 January 1949.
Compare Qom with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Qom