Qazvin climate — normals and trends
Qazvin (Iran) has a hot-summer mediterranean continental climate (Dsa) under the Köppen-Geiger classification. Its mean annual temperature is 12.1 °C and it receives 410 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 (24.3 °C on average) and the coldest is January (-1.5 °C). Rainfall peaks in March.
Qazvin averages 97 frost days, 77 hot days (≥ 30 °C) and 73 rainy days per year.
Qazvin 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 120 to 74 per year over the period.
The hottest day of the period reached 40.7 °C (on 14 August 1997) and the coldest -22.7 °C (on 22 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
QazvinQazvin Province
- coords
- 36.27°, 50.00°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.1°C
Average daily high
18.7°C
Average daily low
6.5°C
Annual rainfall
410mm
Sunshine / day
10.7h
Mean relative humidity
58%
Average peak wind
13.2km/h
Seasonal range
25.8°C
Frost days (< 0 °C)
97 d/yr
Hot days (≥ 30 °C)
77 d/yr
Rainy days (≥ 1 mm)
73 d/yr
Annual snowfall
78.4 cm
Average feels-like high
16.6 °C
Average feels-like low
4.1 °C
Average peak gust
32.2 km/h
Tropical nights (≥ 20 °C)
8 d/yr
Solar radiation
18.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °C
since 1940
+0.4 °C per decade · r² = 0.49 · 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
14 August 1997
Coldest day
-22.7 °C
22 January 1964
Wettest day
65 mm
1 April 2019
Windiest day
36.2 km/h
9 April 1997
Strongest gust
91.1 km/h
26 March 2003
Hottest feels-like
40.9 °C
30 July 1976
Coldest feels-like
-27.4 °C
22 January 1964
Snowiest day
22.3 cm
19 February 1951
Sunniest day
13.9 h
25 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 7.7 °C | +4.3 °C | 13 mm | -32 mm |
| Feb | 6.1 °C | +0.7 °C | 45 mm | -6 mm |
| Mar | 15.2 °C | +4.5 °C | 79 mm | +5 mm |
| Apr | 21.6 °C | +3.8 °C | 46 mm | -23 mm |
| May | 28.4 °C | +4.6 °C | 23 mm | -12 mm |
| Jun | 30.8 °C | +1.2 °C | 4 mm | -3 mm |
| Jul | 34.0 °C | +1.4 °C | 3 mm | +0 mm |
| Aug | 35.6 °C | +3.2 °C | 1 mm | -2 mm |
| Sep | 29.4 °C | +0.9 °C | 8 mm | +4 mm |
| Oct | 25.2 °C | +3.8 °C | 0 mm | -26 mm |
| Nov | 17.8 °C | +5.0 °C | 2 mm | -44 mm |
| Dec | 8.4 °C | +2.2 °C | 48 mm | +3 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 Qazvin?
Qazvin has a hot-summer mediterranean continental climate (Köppen Dsa). Over 1940-2025, the average annual temperature is 12.1 °C and it receives 410 mm of precipitation per year.
What is the hottest day ever recorded in Qazvin?
The hottest day measured in Qazvin between 1940 and 2025 was 14 August 1997, reaching 40.7 °C.
What is the coldest day in Qazvin?
The coldest day measured in Qazvin between 1940 and 2025 was 22 January 1964, at -22.7 °C.
Does it snow in Qazvin?
Yes. Qazvin gets on average 78.4 cm of snow per year and has around 97 frost days.
Has the climate of Qazvin warmed?
Yes: Qazvin warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Qazvin?
The wettest day measured in Qazvin between 1940 and 2025 was 1 April 2019, with 65 mm of rain in 24 hours.
What was the windiest day in Qazvin?
The windiest day measured in Qazvin between 1940 and 2025 was 9 April 1997, with winds reaching 36.2 km/h.
What is the warmest month in Qazvin?
The warmest month in Qazvin is July (24.3 °C on average); the coldest is January (-1.5 °C).
How much does it rain in Qazvin?
Qazvin receives on average 410 mm of precipitation per year, spread over about 73 rainy days.
Is it sunny in Qazvin?
Qazvin gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
What is the biggest single-day snowfall in Qazvin?
The heaviest 24-hour snowfall measured in Qazvin between 1940 and 2025 was 19 February 1951, with 22.3 cm.
Are there tropical nights in Qazvin?
Yes: Qazvin has on average 8 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Qazvin?
In Qazvin, between 1940 and 2025, the highest apparent temperature reached 40.9 °C on 30 July 1976, and the lowest was -27.4 °C on 22 January 1964.
Compare Qazvin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Qazvin