Isperih climate — normals and trends
Isperih (Bulgaria) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.4 °C and it receives 660 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 (22.5 °C on average) and the coldest is January (-0.6 °C). Rainfall peaks in June.
Isperih averages 73 frost days, 21 hot days (≥ 30 °C) and 103 rainy days per year.
Isperih has warmed by +1.8 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 88 to 58 per year over the period.
The hottest day of the period reached 40.7 °C (on 20 August 1945) and the coldest -26.2 °C (on 25 January 1942).
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
IsperihRazgrad
- coords
- 43.72°, 26.83°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.4°C
Average daily high
15.7°C
Average daily low
7.5°C
Annual rainfall
660mm
Sunshine / day
9.0h
Mean relative humidity
74%
Average peak wind
16.0km/h
Seasonal range
23.1°C
Frost days (< 0 °C)
73 d/yr
Hot days (≥ 30 °C)
21 d/yr
Rainy days (≥ 1 mm)
103 d/yr
Annual snowfall
73.4 cm
Average feels-like high
14.2 °C
Average feels-like low
5.1 °C
Average peak gust
32.7 km/h
Tropical nights (≥ 20 °C)
11 d/yr
Solar radiation
13.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.33 · 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
20 August 1945
Coldest day
-26.2 °C
25 January 1942
Wettest day
93 mm
19 June 2014
Windiest day
47.4 km/h
13 November 2016
Strongest gust
93.6 km/h
29 March 1940
Hottest feels-like
42.3 °C
5 July 2000
Coldest feels-like
-31.4 °C
25 January 1942
Snowiest day
33.3 cm
12 March 1973
Sunniest day
14.9 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 | 9.6 °C | +7.0 °C | 10 mm | -37 mm |
| Feb | 2.1 °C | -2.9 °C | 34 mm | -9 mm |
| Mar | 15.4 °C | +5.9 °C | 25 mm | -25 mm |
| Apr | 15.6 °C | -0.1 °C | 39 mm | -22 mm |
| May | 19.6 °C | -1.3 °C | 103 mm | +28 mm |
| Jun | 28.3 °C | +3.3 °C | 11 mm | -73 mm |
| Jul | 32.0 °C | +4.6 °C | 37 mm | -22 mm |
| Aug | 30.1 °C | +2.5 °C | 21 mm | -25 mm |
| Sep | 25.4 °C | +2.2 °C | 32 mm | -13 mm |
| Oct | 15.7 °C | -1.2 °C | 183 mm | +137 mm |
| Nov | 13.6 °C | +3.3 °C | 78 mm | +25 mm |
| Dec | 6.0 °C | +1.3 °C | 14 mm | -37 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 Isperih?
Isperih has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.4 °C and it receives 660 mm of precipitation per year.
What is the hottest day ever recorded in Isperih?
The hottest day measured in Isperih between 1940 and 2025 was 20 August 1945, reaching 40.7 °C.
What is the coldest day in Isperih?
The coldest day measured in Isperih between 1940 and 2025 was 25 January 1942, at -26.2 °C.
Does it snow in Isperih?
Yes. Isperih gets on average 73.4 cm of snow per year and has around 73 frost days.
Has the climate of Isperih warmed?
Yes: Isperih warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Isperih?
The wettest day measured in Isperih between 1940 and 2025 was 19 June 2014, with 93 mm of rain in 24 hours.
What was the windiest day in Isperih?
The windiest day measured in Isperih between 1940 and 2025 was 13 November 2016, with winds reaching 47.4 km/h.
What is the warmest month in Isperih?
The warmest month in Isperih is July (22.5 °C on average); the coldest is January (-0.6 °C).
How much does it rain in Isperih?
Isperih receives on average 660 mm of precipitation per year, spread over about 103 rainy days.
Is it sunny in Isperih?
Isperih gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Isperih?
The heaviest 24-hour snowfall measured in Isperih between 1940 and 2025 was 12 March 1973, with 33.3 cm.
Are there tropical nights in Isperih?
Yes: Isperih has on average 11 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Isperih?
In Isperih, between 1940 and 2025, the highest apparent temperature reached 42.3 °C on 5 July 2000, and the lowest was -31.4 °C on 25 January 1942.
Compare Isperih with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Isperih