Yambol climate — normals and trends
Yambol (Bulgaria) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.4 °C and it receives 576 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 (23.3 °C on average) and the coldest is January (1.2 °C). Rainfall peaks in May.
Yambol averages 64 frost days, 31 hot days (≥ 30 °C) and 95 rainy days per year.
Yambol has warmed by +1.9 °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 78 to 50 per year over the period.
The hottest day of the period reached 40.9 °C (on 20 August 1945) and the coldest -26.6 °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
YambolYambol
- coords
- 42.48°, 26.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.4°C
Average daily high
17.2°C
Average daily low
8.1°C
Annual rainfall
576mm
Sunshine / day
9.4h
Mean relative humidity
72%
Average peak wind
13.8km/h
Seasonal range
22.1°C
Frost days (< 0 °C)
64 d/yr
Hot days (≥ 30 °C)
31 d/yr
Rainy days (≥ 1 mm)
95 d/yr
Annual snowfall
41.9 cm
Average feels-like high
15.9 °C
Average feels-like low
6.4 °C
Average peak gust
30.7 km/h
Tropical nights (≥ 20 °C)
11 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.43 · 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
40.9 °C
20 August 1945
Coldest day
-26.6 °C
25 January 1942
Wettest day
58 mm
3 October 2025
Windiest day
42.6 km/h
21 February 1996
Strongest gust
104.0 km/h
1 January 1971
Hottest feels-like
42.5 °C
24 July 2007
Coldest feels-like
-30.8 °C
25 January 1942
Snowiest day
23.3 cm
21 February 1965
Sunniest day
14.8 h
24 June 2025
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 | 9.8 °C | +5.0 °C | 23 mm | -27 mm |
| Feb | 5.3 °C | -1.9 °C | 41 mm | -7 mm |
| Mar | 16.3 °C | +5.5 °C | 34 mm | -15 mm |
| Apr | 16.4 °C | -0.1 °C | 50 mm | -6 mm |
| May | 21.7 °C | +0.2 °C | 79 mm | +19 mm |
| Jun | 29.6 °C | +3.6 °C | 19 mm | -38 mm |
| Jul | 33.4 °C | +4.5 °C | 7 mm | -31 mm |
| Aug | 30.8 °C | +1.7 °C | 24 mm | -1 mm |
| Sep | 26.3 °C | +1.5 °C | 14 mm | -16 mm |
| Oct | 17.2 °C | -1.2 °C | 145 mm | +99 mm |
| Nov | 15.8 °C | +3.8 °C | 56 mm | -1 mm |
| Dec | 9.2 °C | +2.5 °C | 30 mm | -31 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 Yambol?
Yambol has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.4 °C and it receives 576 mm of precipitation per year.
What is the hottest day ever recorded in Yambol?
The hottest day measured in Yambol between 1940 and 2025 was 20 August 1945, reaching 40.9 °C.
What is the coldest day in Yambol?
The coldest day measured in Yambol between 1940 and 2025 was 25 January 1942, at -26.6 °C.
Does it snow in Yambol?
Yes. Yambol gets on average 41.9 cm of snow per year and has around 64 frost days.
Has the climate of Yambol warmed?
Yes: Yambol warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Yambol?
The wettest day measured in Yambol between 1940 and 2025 was 3 October 2025, with 58 mm of rain in 24 hours.
What was the windiest day in Yambol?
The windiest day measured in Yambol between 1940 and 2025 was 21 February 1996, with winds reaching 42.6 km/h.
What is the warmest month in Yambol?
The warmest month in Yambol is July (23.3 °C on average); the coldest is January (1.2 °C).
How much does it rain in Yambol?
Yambol receives on average 576 mm of precipitation per year, spread over about 95 rainy days.
Is it sunny in Yambol?
Yambol gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
What is the biggest single-day snowfall in Yambol?
The heaviest 24-hour snowfall measured in Yambol between 1940 and 2025 was 21 February 1965, with 23.3 cm.
Are there tropical nights in Yambol?
Yes: Yambol has on average 11 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Yambol?
In Yambol, between 1940 and 2025, the highest apparent temperature reached 42.5 °C on 24 July 2007, and the lowest was -30.8 °C on 25 January 1942.
Compare Yambol with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Yambol