Tajrīsh climate — normals and trends
Tajrīsh (Iran) has a hot-summer mediterranean continental climate (Dsa) under the Köppen-Geiger classification. Its mean annual temperature is 11.2 °C and it receives 348 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 (-4.2 °C). Rainfall peaks in March.
Tajrīsh averages 118 frost days, 45 hot days (≥ 30 °C) and 65 rainy days per year.
Tajrīsh has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 134 to 102 per year over the period.
The hottest day of the period reached 36.8 °C (on 7 August 2024) and the coldest -24.5 °C (on 5 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
TajrīshTehran
- coords
- 35.80°, 51.43°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.2°C
Average daily high
15.9°C
Average daily low
6.4°C
Annual rainfall
348mm
Sunshine / day
10.9h
Mean relative humidity
44%
Average peak wind
10.4km/h
Seasonal range
30.3°C
Frost days (< 0 °C)
118 d/yr
Hot days (≥ 30 °C)
45 d/yr
Rainy days (≥ 1 mm)
65 d/yr
Annual snowfall
92.7 cm
Average feels-like high
13.5 °C
Average feels-like low
3.0 °C
Average peak gust
32.8 km/h
Tropical nights (≥ 20 °C)
46 d/yr
Solar radiation
19.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.42 · 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
36.8 °C
7 August 2024
Coldest day
-24.5 °C
5 January 1964
Wettest day
43 mm
29 January 2013
Windiest day
27.0 km/h
10 April 2000
Strongest gust
86.4 km/h
25 April 1978
Hottest feels-like
35.0 °C
24 July 2013
Coldest feels-like
-30.2 °C
5 January 1964
Snowiest day
18.6 cm
1 December 1972
Sunniest day
13.5 h
23 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 | 5.1 °C | +4.6 °C | 12 mm | -30 mm |
| Feb | 2.8 °C | +0.6 °C | 46 mm | -1 mm |
| Mar | 11.9 °C | +4.6 °C | 51 mm | -14 mm |
| Apr | 19.3 °C | +4.8 °C | 31 mm | -20 mm |
| May | 26.3 °C | +5.0 °C | 8 mm | -20 mm |
| Jun | 28.7 °C | +0.8 °C | 7 mm | +1 mm |
| Jul | 32.4 °C | +1.6 °C | 4 mm | 0 mm |
| Aug | 32.0 °C | +2.4 °C | 0 mm | -3 mm |
| Sep | 26.7 °C | +1.3 °C | 1 mm | -4 mm |
| Oct | 22.0 °C | +3.8 °C | 0 mm | -20 mm |
| Nov | 14.7 °C | +4.8 °C | 1 mm | -37 mm |
| Dec | 6.0 °C | +2.6 °C | 35 mm | -6 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 Tajrīsh?
Tajrīsh has a hot-summer mediterranean continental climate (Köppen Dsa). Over 1940-2025, the average annual temperature is 11.2 °C and it receives 348 mm of precipitation per year.
What is the hottest day ever recorded in Tajrīsh?
The hottest day measured in Tajrīsh between 1940 and 2025 was 7 August 2024, reaching 36.8 °C.
What is the coldest day in Tajrīsh?
The coldest day measured in Tajrīsh between 1940 and 2025 was 5 January 1964, at -24.5 °C.
Does it snow in Tajrīsh?
Yes. Tajrīsh gets on average 92.7 cm of snow per year and has around 118 frost days.
Has the climate of Tajrīsh warmed?
Yes: Tajrīsh warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tajrīsh?
The wettest day measured in Tajrīsh between 1940 and 2025 was 29 January 2013, with 43 mm of rain in 24 hours.
What was the windiest day in Tajrīsh?
The windiest day measured in Tajrīsh between 1940 and 2025 was 10 April 2000, with winds reaching 27.0 km/h.
What is the warmest month in Tajrīsh?
The warmest month in Tajrīsh is July (26.1 °C on average); the coldest is January (-4.2 °C).
How much does it rain in Tajrīsh?
Tajrīsh receives on average 348 mm of precipitation per year, spread over about 65 rainy days.
Is it sunny in Tajrīsh?
Tajrīsh 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 Tajrīsh?
The heaviest 24-hour snowfall measured in Tajrīsh between 1940 and 2025 was 1 December 1972, with 18.6 cm.
Are there tropical nights in Tajrīsh?
Yes: Tajrīsh has on average 46 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tajrīsh?
In Tajrīsh, between 1940 and 2025, the highest apparent temperature reached 35.0 °C on 24 July 2013, and the lowest was -30.2 °C on 5 January 1964.
Compare Tajrīsh with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tajrīsh