Petrich climate — normals and trends
Petrich (Bulgaria) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.8 °C and it receives 737 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 (22.4 °C on average) and the coldest is January (0.8 °C). Rainfall peaks in May.
Petrich averages 76 frost days, 19 hot days (≥ 30 °C) and 118 rainy days per year.
Petrich 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 90 to 62 per year over the period.
The hottest day of the period reached 39.1 °C (on 24 July 2007) and the coldest -25.4 °C (on 14 January 1950).
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
PetrichBlagoevgrad
- coords
- 41.40°, 23.21°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.8°C
Average daily high
16.5°C
Average daily low
6.8°C
Annual rainfall
737mm
Sunshine / day
9.8h
Mean relative humidity
68%
Average peak wind
7.6km/h
Seasonal range
21.6°C
Frost days (< 0 °C)
76 d/yr
Hot days (≥ 30 °C)
19 d/yr
Rainy days (≥ 1 mm)
118 d/yr
Annual snowfall
57.1 cm
Average feels-like high
15.7 °C
Average feels-like low
4.8 °C
Average peak gust
27.9 km/h
Tropical nights (≥ 20 °C)
4 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.45 · 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
39.1 °C
24 July 2007
Coldest day
-25.4 °C
14 January 1950
Wettest day
62 mm
6 November 1961
Windiest day
23.8 km/h
2 April 1944
Strongest gust
98.3 km/h
15 March 1962
Hottest feels-like
41.0 °C
24 July 2007
Coldest feels-like
-30.3 °C
14 January 1950
Snowiest day
20.8 cm
14 March 1956
Sunniest day
15.0 h
24 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 | 8.0 °C | +3.1 °C | 41 mm | -25 mm |
| Feb | 6.7 °C | -0.5 °C | 74 mm | +9 mm |
| Mar | 14.6 °C | +3.8 °C | 75 mm | +3 mm |
| Apr | 16.9 °C | +1.1 °C | 81 mm | +8 mm |
| May | 20.4 °C | -0.1 °C | 178 mm | +95 mm |
| Jun | 29.2 °C | +4.4 °C | 23 mm | -39 mm |
| Jul | 32.0 °C | +4.4 °C | 11 mm | -26 mm |
| Aug | 29.4 °C | +1.6 °C | 32 mm | +0 mm |
| Sep | 26.5 °C | +3.0 °C | 27 mm | -9 mm |
| Oct | 15.7 °C | -1.9 °C | 85 mm | +25 mm |
| Nov | 14.0 °C | +2.7 °C | 138 mm | +62 mm |
| Dec | 9.0 °C | +2.5 °C | 72 mm | -6 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 Petrich?
Petrich has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 11.8 °C and it receives 737 mm of precipitation per year.
What is the hottest day ever recorded in Petrich?
The hottest day measured in Petrich between 1940 and 2025 was 24 July 2007, reaching 39.1 °C.
What is the coldest day in Petrich?
The coldest day measured in Petrich between 1940 and 2025 was 14 January 1950, at -25.4 °C.
Does it snow in Petrich?
Yes. Petrich gets on average 57.1 cm of snow per year and has around 76 frost days.
Has the climate of Petrich warmed?
Yes: Petrich warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Petrich?
The wettest day measured in Petrich between 1940 and 2025 was 6 November 1961, with 62 mm of rain in 24 hours.
What was the windiest day in Petrich?
The windiest day measured in Petrich between 1940 and 2025 was 2 April 1944, with winds reaching 23.8 km/h.
What is the warmest month in Petrich?
The warmest month in Petrich is July (22.4 °C on average); the coldest is January (0.8 °C).
How much does it rain in Petrich?
Petrich receives on average 737 mm of precipitation per year, spread over about 118 rainy days.
Is it sunny in Petrich?
Petrich 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 Petrich?
The heaviest 24-hour snowfall measured in Petrich between 1940 and 2025 was 14 March 1956, with 20.8 cm.
Are there tropical nights in Petrich?
Yes: Petrich has on average 4 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Petrich?
In Petrich, between 1940 and 2025, the highest apparent temperature reached 41.0 °C on 24 July 2007, and the lowest was -30.3 °C on 14 January 1950.
Compare Petrich with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Petrich