Simitli climate — normals and trends
Simitli (Bulgaria) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.5 °C and it receives 613 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 (20.7 °C on average) and the coldest is January (-0.4 °C). Rainfall peaks in April.
Simitli averages 91 frost days, 13 hot days (≥ 30 °C) and 101 rainy days per year.
Simitli has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 103 to 79 per year over the period.
The hottest day of the period reached 38.6 °C (on 5 July 2000) and the coldest -28.7 °C (on 30 December 1941).
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
SimitliBlagoevgrad
- coords
- 41.88°, 23.12°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.5°C
Average daily high
15.7°C
Average daily low
5.6°C
Annual rainfall
613mm
Sunshine / day
9.8h
Mean relative humidity
68%
Average peak wind
10.0km/h
Seasonal range
21.1°C
Frost days (< 0 °C)
91 d/yr
Hot days (≥ 30 °C)
13 d/yr
Rainy days (≥ 1 mm)
101 d/yr
Annual snowfall
74.6 cm
Average feels-like high
14.1 °C
Average feels-like low
3.4 °C
Average peak gust
29.5 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
38.6 °C
5 July 2000
Coldest day
-28.7 °C
30 December 1941
Wettest day
57 mm
19 August 1949
Windiest day
28.5 km/h
2 April 1944
Strongest gust
91.8 km/h
30 December 2005
Hottest feels-like
39.2 °C
5 July 2000
Coldest feels-like
-33.7 °C
30 December 1941
Snowiest day
31.0 cm
14 March 1956
Sunniest day
15.0 h
10 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 | 7.5 °C | +3.5 °C | 43 mm | -9 mm |
| Feb | 6.9 °C | +0.5 °C | 14 mm | -35 mm |
| Mar | 15.1 °C | +4.9 °C | 73 mm | +11 mm |
| Apr | 16.0 °C | +0.8 °C | 51 mm | -16 mm |
| May | 19.1 °C | -0.7 °C | 103 mm | +37 mm |
| Jun | 28.0 °C | +4.4 °C | 3 mm | -48 mm |
| Jul | 30.9 °C | +4.6 °C | 14 mm | -17 mm |
| Aug | 28.2 °C | +1.5 °C | 55 mm | +27 mm |
| Sep | 25.3 °C | +2.7 °C | 39 mm | +5 mm |
| Oct | 14.3 °C | -2.6 °C | 105 mm | +56 mm |
| Nov | 13.5 °C | +2.8 °C | 117 mm | +55 mm |
| Dec | 7.7 °C | +2.1 °C | 51 mm | -11 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 Simitli?
Simitli has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 10.5 °C and it receives 613 mm of precipitation per year.
What is the hottest day ever recorded in Simitli?
The hottest day measured in Simitli between 1940 and 2025 was 5 July 2000, reaching 38.6 °C.
What is the coldest day in Simitli?
The coldest day measured in Simitli between 1940 and 2025 was 30 December 1941, at -28.7 °C.
Does it snow in Simitli?
Yes. Simitli gets on average 74.6 cm of snow per year and has around 91 frost days.
Has the climate of Simitli warmed?
Yes: Simitli warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Simitli?
The wettest day measured in Simitli between 1940 and 2025 was 19 August 1949, with 57 mm of rain in 24 hours.
What was the windiest day in Simitli?
The windiest day measured in Simitli between 1940 and 2025 was 2 April 1944, with winds reaching 28.5 km/h.
What is the warmest month in Simitli?
The warmest month in Simitli is July (20.7 °C on average); the coldest is January (-0.4 °C).
How much does it rain in Simitli?
Simitli receives on average 613 mm of precipitation per year, spread over about 101 rainy days.
Is it sunny in Simitli?
Simitli gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Simitli?
The heaviest 24-hour snowfall measured in Simitli between 1940 and 2025 was 14 March 1956, with 31.0 cm.
Are there tropical nights in Simitli?
Yes: Simitli has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Simitli?
In Simitli, between 1940 and 2025, the highest apparent temperature reached 39.2 °C on 5 July 2000, and the lowest was -33.7 °C on 30 December 1941.
Compare Simitli with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Simitli