İsmayıllı climate — normals and trends
İsmayıllı (Azerbaijan) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.7 °C and it receives 745 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 (21.6 °C on average) and the coldest is January (-1.7 °C). Rainfall peaks in October.
İsmayıllı averages 102 frost days, 10 hot days (≥ 30 °C) and 115 rainy days per year.
İsmayıllı has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 113 to 91 per year over the period.
The hottest day of the period reached 34.9 °C (on 2 July 2018) and the coldest -20.1 °C (on 9 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
İsmayıllıIsmayilli District
- coords
- 40.78°, 48.15°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.7°C
Average daily high
13.6°C
Average daily low
5.8°C
Annual rainfall
745mm
Sunshine / day
9.7h
Mean relative humidity
71%
Average peak wind
8.1km/h
Seasonal range
23.3°C
Frost days (< 0 °C)
102 d/yr
Hot days (≥ 30 °C)
10 d/yr
Rainy days (≥ 1 mm)
115 d/yr
Annual snowfall
133.4 cm
Average feels-like high
12.6 °C
Average feels-like low
3.7 °C
Average peak gust
24.6 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.29 · 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
34.9 °C
2 July 2018
Coldest day
-20.1 °C
9 January 2008
Wettest day
62 mm
17 July 2023
Windiest day
25.0 km/h
17 May 1991
Strongest gust
75.6 km/h
24 April 1977
Hottest feels-like
37.1 °C
31 August 1998
Coldest feels-like
-24.8 °C
9 January 2008
Snowiest day
21.4 cm
24 December 1963
Sunniest day
14.0 h
3 July 2019
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 | 4.8 °C | +3.5 °C | 22 mm | -21 mm |
| Feb | 0.6 °C | -1.5 °C | 62 mm | +7 mm |
| Mar | 10.2 °C | +4.3 °C | 53 mm | -27 mm |
| Apr | 14.6 °C | +2.0 °C | 114 mm | +34 mm |
| May | 20.3 °C | +1.8 °C | 71 mm | -8 mm |
| Jun | 23.1 °C | -0.1 °C | 57 mm | -1 mm |
| Jul | 28.4 °C | +2.1 °C | 13 mm | -27 mm |
| Aug | 28.6 °C | +2.5 °C | 25 mm | -16 mm |
| Sep | 20.2 °C | -0.8 °C | 117 mm | +49 mm |
| Oct | 16.4 °C | +1.7 °C | 38 mm | -48 mm |
| Nov | 13.1 °C | +4.8 °C | 13 mm | -55 mm |
| Dec | 4.5 °C | +1.2 °C | 50 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 İsmayıllı?
İsmayıllı has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 9.7 °C and it receives 745 mm of precipitation per year.
What is the hottest day ever recorded in İsmayıllı?
The hottest day measured in İsmayıllı between 1940 and 2025 was 2 July 2018, reaching 34.9 °C.
What is the coldest day in İsmayıllı?
The coldest day measured in İsmayıllı between 1940 and 2025 was 9 January 2008, at -20.1 °C.
Does it snow in İsmayıllı?
Yes. İsmayıllı gets on average 133.4 cm of snow per year and has around 102 frost days.
Has the climate of İsmayıllı warmed?
Yes: İsmayıllı warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in İsmayıllı?
The wettest day measured in İsmayıllı between 1940 and 2025 was 17 July 2023, with 62 mm of rain in 24 hours.
What was the windiest day in İsmayıllı?
The windiest day measured in İsmayıllı between 1940 and 2025 was 17 May 1991, with winds reaching 25.0 km/h.
What is the warmest month in İsmayıllı?
The warmest month in İsmayıllı is July (21.6 °C on average); the coldest is January (-1.7 °C).
How much does it rain in İsmayıllı?
İsmayıllı receives on average 745 mm of precipitation per year, spread over about 115 rainy days.
Is it sunny in İsmayıllı?
İsmayıllı gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
What is the biggest single-day snowfall in İsmayıllı?
The heaviest 24-hour snowfall measured in İsmayıllı between 1940 and 2025 was 24 December 1963, with 21.4 cm.
Are there tropical nights in İsmayıllı?
Yes: İsmayıllı has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in İsmayıllı?
In İsmayıllı, between 1940 and 2025, the highest apparent temperature reached 37.1 °C on 31 August 1998, and the lowest was -24.8 °C on 9 January 2008.
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Nearby cities
The climate around İsmayıllı