Runcu climate — normals and trends
Runcu (Romania) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.2 °C and it receives 797 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 (20.9 °C on average) and the coldest is January (-1.7 °C). Rainfall peaks in May.
Runcu averages 96 frost days, 13 hot days (≥ 30 °C) and 115 rainy days per year.
Runcu has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 114 to 78 per year over the period.
The hottest day of the period reached 38.3 °C (on 4 July 2000) and the coldest -28.0 °C (on 19 December 1946).
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
RuncuGorj County
- coords
- 45.12°, 23.13°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.2°C
Average daily high
15.1°C
Average daily low
5.6°C
Annual rainfall
797mm
Sunshine / day
9.2h
Mean relative humidity
76%
Average peak wind
9.0km/h
Seasonal range
22.6°C
Frost days (< 0 °C)
96 d/yr
Hot days (≥ 30 °C)
13 d/yr
Rainy days (≥ 1 mm)
115 d/yr
Annual snowfall
87.2 cm
Average feels-like high
14.1 °C
Average feels-like low
3.8 °C
Average peak gust
22.5 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
13.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.49 · 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
38.3 °C
4 July 2000
Coldest day
-28.0 °C
19 December 1946
Wettest day
86 mm
3 July 2017
Windiest day
33.5 km/h
26 February 1988
Strongest gust
89.3 km/h
26 February 1988
Hottest feels-like
41.1 °C
6 July 1988
Coldest feels-like
-32.4 °C
19 December 1946
Snowiest day
36.0 cm
8 December 1945
Sunniest day
15.0 h
12 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 | +5.7 °C | 14 mm | -46 mm |
| Feb | 4.1 °C | -0.7 °C | 27 mm | -32 mm |
| Mar | 14.0 °C | +4.2 °C | 100 mm | +36 mm |
| Apr | 16.7 °C | +0.9 °C | 34 mm | -42 mm |
| May | 18.8 °C | -1.8 °C | 112 mm | +27 mm |
| Jun | 28.4 °C | +4.1 °C | 8 mm | -70 mm |
| Jul | 29.0 °C | +2.4 °C | 36 mm | -20 mm |
| Aug | 27.8 °C | +1.3 °C | 26 mm | -22 mm |
| Sep | 23.8 °C | +1.6 °C | 28 mm | -24 mm |
| Oct | 14.7 °C | -1.1 °C | 103 mm | +35 mm |
| Nov | 11.4 °C | +2.4 °C | 181 mm | +100 mm |
| Dec | 6.7 °C | +2.7 °C | 51 mm | -22 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 Runcu?
Runcu has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 10.2 °C and it receives 797 mm of precipitation per year.
What is the hottest day ever recorded in Runcu?
The hottest day measured in Runcu between 1940 and 2025 was 4 July 2000, reaching 38.3 °C.
What is the coldest day in Runcu?
The coldest day measured in Runcu between 1940 and 2025 was 19 December 1946, at -28.0 °C.
Does it snow in Runcu?
Yes. Runcu gets on average 87.2 cm of snow per year and has around 96 frost days.
Has the climate of Runcu warmed?
Yes: Runcu warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Runcu?
The wettest day measured in Runcu between 1940 and 2025 was 3 July 2017, with 86 mm of rain in 24 hours.
What was the windiest day in Runcu?
The windiest day measured in Runcu between 1940 and 2025 was 26 February 1988, with winds reaching 33.5 km/h.
What is the warmest month in Runcu?
The warmest month in Runcu is July (20.9 °C on average); the coldest is January (-1.7 °C).
How much does it rain in Runcu?
Runcu receives on average 797 mm of precipitation per year, spread over about 115 rainy days.
Is it sunny in Runcu?
Runcu gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Runcu?
The heaviest 24-hour snowfall measured in Runcu between 1940 and 2025 was 8 December 1945, with 36.0 cm.
Are there tropical nights in Runcu?
Yes: Runcu has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Runcu?
In Runcu, between 1940 and 2025, the highest apparent temperature reached 41.1 °C on 6 July 1988, and the lowest was -32.4 °C on 19 December 1946.
Compare Runcu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Runcu