Oshnavīyeh climate — normals and trends
Oshnavīyeh (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 759 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 (21.5 °C on average) and the coldest is January (-6.1 °C). Rainfall peaks in March.
Oshnavīyeh averages 148 frost days, 17 hot days (≥ 30 °C) and 101 rainy days per year.
Oshnavīyeh has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 165 to 131 per year over the period.
The hottest day of the period reached 35.6 °C (on 28 July 1973) and the coldest -31.8 °C (on 8 January 2008).
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
OshnavīyehWest Azerbaijan Province
- coords
- 37.04°, 45.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.8°C
Average daily high
13.2°C
Average daily low
2.8°C
Annual rainfall
759mm
Sunshine / day
10.6h
Mean relative humidity
63%
Average peak wind
11.8km/h
Seasonal range
27.6°C
Frost days (< 0 °C)
148 d/yr
Hot days (≥ 30 °C)
17 d/yr
Rainy days (≥ 1 mm)
101 d/yr
Annual snowfall
307.7 cm
Average feels-like high
11.0 °C
Average feels-like low
-0.5 °C
Average peak gust
40.3 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
19.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.41 · 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
35.6 °C
28 July 1973
Coldest day
-31.8 °C
8 January 2008
Wettest day
67 mm
26 February 1991
Windiest day
29.6 km/h
26 May 1984
Strongest gust
112.7 km/h
6 January 1950
Hottest feels-like
36.4 °C
12 July 2010
Coldest feels-like
-36.2 °C
8 January 2008
Snowiest day
44.5 cm
26 February 1991
Sunniest day
14.0 h
16 May 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 | 0.7 °C | +2.6 °C | 23 mm | -76 mm |
| Feb | -1.8 °C | -1.5 °C | 72 mm | -34 mm |
| Mar | 9.1 °C | +5.3 °C | 59 mm | -65 mm |
| Apr | 13.5 °C | +3.3 °C | 123 mm | +19 mm |
| May | 20.2 °C | +2.8 °C | 70 mm | -2 mm |
| Jun | 24.9 °C | +1.3 °C | 20 mm | -2 mm |
| Jul | 29.2 °C | +1.3 °C | 1 mm | -10 mm |
| Aug | 32.4 °C | +4.4 °C | 5 mm | -3 mm |
| Sep | 24.9 °C | +0.9 °C | 3 mm | -7 mm |
| Oct | 19.7 °C | +3.1 °C | 3 mm | -37 mm |
| Nov | 13.1 °C | +5.0 °C | 34 mm | -38 mm |
| Dec | 2.7 °C | +1.8 °C | 164 mm | +75 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 Oshnavīyeh?
Oshnavīyeh has a warm-summer mediterranean continental climate (Köppen Dsb). Over 1940-2025, the average annual temperature is 7.8 °C and it receives 759 mm of precipitation per year.
What is the hottest day ever recorded in Oshnavīyeh?
The hottest day measured in Oshnavīyeh between 1940 and 2025 was 28 July 1973, reaching 35.6 °C.
What is the coldest day in Oshnavīyeh?
The coldest day measured in Oshnavīyeh between 1940 and 2025 was 8 January 2008, at -31.8 °C.
Does it snow in Oshnavīyeh?
Yes. Oshnavīyeh gets on average 307.7 cm of snow per year and has around 148 frost days.
Has the climate of Oshnavīyeh warmed?
Yes: Oshnavīyeh warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Oshnavīyeh?
The wettest day measured in Oshnavīyeh between 1940 and 2025 was 26 February 1991, with 67 mm of rain in 24 hours.
What was the windiest day in Oshnavīyeh?
The windiest day measured in Oshnavīyeh between 1940 and 2025 was 26 May 1984, with winds reaching 29.6 km/h.
What is the warmest month in Oshnavīyeh?
The warmest month in Oshnavīyeh is July (21.5 °C on average); the coldest is January (-6.1 °C).
How much does it rain in Oshnavīyeh?
Oshnavīyeh receives on average 759 mm of precipitation per year, spread over about 101 rainy days.
Is it sunny in Oshnavīyeh?
Oshnavīyeh gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
What is the biggest single-day snowfall in Oshnavīyeh?
The heaviest 24-hour snowfall measured in Oshnavīyeh between 1940 and 2025 was 26 February 1991, with 44.5 cm.
Are there tropical nights in Oshnavīyeh?
Yes: Oshnavīyeh has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Oshnavīyeh?
In Oshnavīyeh, between 1940 and 2025, the highest apparent temperature reached 36.4 °C on 12 July 2010, and the lowest was -36.2 °C on 8 January 2008.
Compare Oshnavīyeh with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Oshnavīyeh