Straldzha climate — normals and trends
Straldzha (Bulgaria) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.5 °C and it receives 582 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 (1.3 °C). Rainfall peaks in May.
Straldzha averages 62 frost days, 29 hot days (≥ 30 °C) and 94 rainy days per year.
Straldzha 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 76 to 48 per year over the period.
The hottest day of the period reached 41.1 °C (on 20 August 1945) and the coldest -27.0 °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
StraldzhaYambol
- coords
- 42.60°, 26.68°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.5°C
Average daily high
17.2°C
Average daily low
8.2°C
Annual rainfall
582mm
Sunshine / day
9.3h
Mean relative humidity
73%
Average peak wind
15.2km/h
Seasonal range
22.0°C
Frost days (< 0 °C)
62 d/yr
Hot days (≥ 30 °C)
29 d/yr
Rainy days (≥ 1 mm)
94 d/yr
Annual snowfall
41.5 cm
Average feels-like high
15.8 °C
Average feels-like low
6.4 °C
Average peak gust
32.0 km/h
Tropical nights (≥ 20 °C)
11 d/yr
Solar radiation
14.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.42 · 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
41.1 °C
20 August 1945
Coldest day
-27.0 °C
25 January 1942
Wettest day
59 mm
6 July 1991
Windiest day
46.8 km/h
1 January 1971
Strongest gust
96.8 km/h
1 January 1971
Hottest feels-like
42.5 °C
24 July 2007
Coldest feels-like
-31.4 °C
25 January 1942
Snowiest day
20.9 cm
21 February 1965
Sunniest day
14.8 h
23 June 1946
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 | 9.9 °C | +4.9 °C | 25 mm | -24 mm |
| Feb | 5.2 °C | -2.1 °C | 46 mm | -2 mm |
| Mar | 16.0 °C | +5.2 °C | 44 mm | -6 mm |
| Apr | 15.8 °C | -0.6 °C | 53 mm | -4 mm |
| May | 21.3 °C | -0.1 °C | 87 mm | +27 mm |
| Jun | 28.9 °C | +3.0 °C | 10 mm | -50 mm |
| Jul | 32.9 °C | +4.1 °C | 5 mm | -34 mm |
| Aug | 30.3 °C | +1.3 °C | 23 mm | -3 mm |
| Sep | 25.9 °C | +1.1 °C | 12 mm | -19 mm |
| Oct | 17.5 °C | -0.9 °C | 142 mm | +96 mm |
| Nov | 16.1 °C | +3.9 °C | 47 mm | -8 mm |
| Dec | 9.3 °C | +2.4 °C | 29 mm | -30 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 Straldzha?
Straldzha has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.5 °C and it receives 582 mm of precipitation per year.
What is the hottest day ever recorded in Straldzha?
The hottest day measured in Straldzha between 1940 and 2025 was 20 August 1945, reaching 41.1 °C.
What is the coldest day in Straldzha?
The coldest day measured in Straldzha between 1940 and 2025 was 25 January 1942, at -27.0 °C.
Does it snow in Straldzha?
Yes. Straldzha gets on average 41.5 cm of snow per year and has around 62 frost days.
Has the climate of Straldzha warmed?
Yes: Straldzha warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Straldzha?
The wettest day measured in Straldzha between 1940 and 2025 was 6 July 1991, with 59 mm of rain in 24 hours.
What was the windiest day in Straldzha?
The windiest day measured in Straldzha between 1940 and 2025 was 1 January 1971, with winds reaching 46.8 km/h.
What is the warmest month in Straldzha?
The warmest month in Straldzha is July (23.3 °C on average); the coldest is January (1.3 °C).
How much does it rain in Straldzha?
Straldzha receives on average 582 mm of precipitation per year, spread over about 94 rainy days.
Is it sunny in Straldzha?
Straldzha gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
What is the biggest single-day snowfall in Straldzha?
The heaviest 24-hour snowfall measured in Straldzha between 1940 and 2025 was 21 February 1965, with 20.9 cm.
Are there tropical nights in Straldzha?
Yes: Straldzha has on average 11 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Straldzha?
In Straldzha, between 1940 and 2025, the highest apparent temperature reached 42.5 °C on 24 July 2007, and the lowest was -31.4 °C on 25 January 1942.
Compare Straldzha with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Straldzha