Varāmīn climate — normals and trends
Varāmīn (Iran) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 18.6 °C and it receives 169 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 (33.3 °C on average) and the coldest is January (3.5 °C). Rainfall peaks in March.
Varāmīn averages 50 frost days, 147 hot days (≥ 30 °C) and 35 rainy days per year.
Varāmīn has warmed by +3.1 °C between 1940 and 2025, or +0.36 °C per decade. This trend is statistically significant.
The number of frost days there went from about 71 to 29 per year over the period.
The hottest day of the period reached 46.4 °C (on 17 July 2003) and the coldest -21.6 °C (on 8 February 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
VarāmīnTehran
- coords
- 35.32°, 51.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.6°C
Average daily high
24.7°C
Average daily low
12.1°C
Annual rainfall
169mm
Sunshine / day
10.9h
Mean relative humidity
39%
Average peak wind
13.8km/h
Seasonal range
29.8°C
Frost days (< 0 °C)
50 d/yr
Hot days (≥ 30 °C)
147 d/yr
Rainy days (≥ 1 mm)
35 d/yr
Annual snowfall
12.1 cm
Average feels-like high
22.2 °C
Average feels-like low
9.2 °C
Average peak gust
29.0 km/h
Tropical nights (≥ 20 °C)
107 d/yr
Solar radiation
20.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °C
since 1940
+0.4 °C per decade · r² = 0.51 · 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
46.4 °C
17 July 2003
Coldest day
-21.6 °C
8 February 1950
Wettest day
37 mm
3 April 1968
Windiest day
45.5 km/h
25 April 1978
Strongest gust
89.6 km/h
7 April 1964
Hottest feels-like
44.8 °C
27 July 2024
Coldest feels-like
-26.3 °C
8 February 1950
Snowiest day
15.1 cm
3 February 1968
Sunniest day
13.3 h
3 July 2013
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 | 11.9 °C | +2.7 °C | 12 mm | -13 mm |
| Feb | 11.6 °C | -0.5 °C | 13 mm | -11 mm |
| Mar | 20.2 °C | +2.7 °C | 29 mm | -4 mm |
| Apr | 28.9 °C | +4.5 °C | 7 mm | -15 mm |
| May | 35.4 °C | +4.5 °C | 7 mm | -3 mm |
| Jun | 37.6 °C | +0.7 °C | 1 mm | -1 mm |
| Jul | 41.0 °C | +1.5 °C | 0 mm | -0 mm |
| Aug | 39.7 °C | +1.7 °C | 0 mm | -1 mm |
| Sep | 35.0 °C | +1.3 °C | 0 mm | -1 mm |
| Oct | 30.1 °C | +3.8 °C | 0 mm | -7 mm |
| Nov | 21.4 °C | +4.1 °C | 0 mm | -21 mm |
| Dec | 12.8 °C | +1.9 °C | 11 mm | -13 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 Varāmīn?
Varāmīn has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 18.6 °C and it receives 169 mm of precipitation per year.
What is the hottest day ever recorded in Varāmīn?
The hottest day measured in Varāmīn between 1940 and 2025 was 17 July 2003, reaching 46.4 °C.
What is the coldest day in Varāmīn?
The coldest day measured in Varāmīn between 1940 and 2025 was 8 February 1950, at -21.6 °C.
Does it snow in Varāmīn?
Yes. Varāmīn gets on average 12.1 cm of snow per year and has around 50 frost days.
Has the climate of Varāmīn warmed?
Yes: Varāmīn warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Varāmīn?
The wettest day measured in Varāmīn between 1940 and 2025 was 3 April 1968, with 37 mm of rain in 24 hours.
What was the windiest day in Varāmīn?
The windiest day measured in Varāmīn between 1940 and 2025 was 25 April 1978, with winds reaching 45.5 km/h.
What is the warmest month in Varāmīn?
The warmest month in Varāmīn is July (33.3 °C on average); the coldest is January (3.5 °C).
How much does it rain in Varāmīn?
Varāmīn receives on average 169 mm of precipitation per year, spread over about 35 rainy days.
Is it sunny in Varāmīn?
Varāmīn 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 Varāmīn?
The heaviest 24-hour snowfall measured in Varāmīn between 1940 and 2025 was 3 February 1968, with 15.1 cm.
Are there tropical nights in Varāmīn?
Yes: Varāmīn has on average 107 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Varāmīn?
In Varāmīn, between 1940 and 2025, the highest apparent temperature reached 44.8 °C on 27 July 2024, and the lowest was -26.3 °C on 8 February 1950.
Compare Varāmīn with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Varāmīn