Constanța climate — normals and trends
Constanța (Romania) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.6 °C and it receives 467 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 August (23.2 °C on average) and the coldest is January (2.2 °C). Rainfall peaks in November.
Constanța averages 33 frost days, 1 hot days (≥ 30 °C) and 82 rainy days per year.
Constanța 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 45 to 21 per year over the period.
The hottest day of the period reached 33.8 °C (on 25 July 2007) and the coldest -15.5 °C (on 24 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
ConstanțaConstanța County
- coords
- 44.18°, 28.63°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.6°C
Average daily high
14.6°C
Average daily low
10.8°C
Annual rainfall
467mm
Sunshine / day
9.2h
Mean relative humidity
77%
Average peak wind
24.8km/h
Seasonal range
21.0°C
Frost days (< 0 °C)
33 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
82 d/yr
Annual snowfall
30.2 cm
Average feels-like high
12.7 °C
Average feels-like low
7.7 °C
Average peak gust
36.3 km/h
Tropical nights (≥ 20 °C)
59 d/yr
Solar radiation
14.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.37 · 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
33.8 °C
25 July 2007
Coldest day
-15.5 °C
24 January 1942
Wettest day
120 mm
22 September 2005
Windiest day
68.8 km/h
19 November 2023
Strongest gust
103.7 km/h
18 January 2018
Hottest feels-like
37.0 °C
25 July 2007
Coldest feels-like
-23.4 °C
12 January 1950
Snowiest day
18.8 cm
3 February 1954
Sunniest day
14.6 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 | 8.7 °C | +4.5 °C | 22 mm | -21 mm |
| Feb | 3.3 °C | -1.7 °C | 17 mm | -20 mm |
| Mar | 10.8 °C | +3.3 °C | 12 mm | -24 mm |
| Apr | 12.3 °C | +0.4 °C | 20 mm | -16 mm |
| May | 16.7 °C | -0.8 °C | 55 mm | +19 mm |
| Jun | 24.3 °C | +1.8 °C | 1 mm | -41 mm |
| Jul | 26.8 °C | +1.6 °C | 8 mm | -22 mm |
| Aug | 26.2 °C | +0.9 °C | 3 mm | -28 mm |
| Sep | 22.6 °C | +1.1 °C | 30 mm | -10 mm |
| Oct | 16.5 °C | +0.2 °C | 124 mm | +80 mm |
| Nov | 14.7 °C | +3.5 °C | 58 mm | +10 mm |
| Dec | 8.1 °C | +1.6 °C | 20 mm | -27 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 Constanța?
Constanța has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.6 °C and it receives 467 mm of precipitation per year.
What is the hottest day ever recorded in Constanța?
The hottest day measured in Constanța between 1940 and 2025 was 25 July 2007, reaching 33.8 °C.
What is the coldest day in Constanța?
The coldest day measured in Constanța between 1940 and 2025 was 24 January 1942, at -15.5 °C.
Does it snow in Constanța?
Yes. Constanța gets on average 30.2 cm of snow per year and has around 33 frost days.
Has the climate of Constanța warmed?
Yes: Constanța warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Constanța?
The wettest day measured in Constanța between 1940 and 2025 was 22 September 2005, with 120 mm of rain in 24 hours.
What was the windiest day in Constanța?
The windiest day measured in Constanța between 1940 and 2025 was 19 November 2023, with winds reaching 68.8 km/h.
What is the warmest month in Constanța?
The warmest month in Constanța is August (23.2 °C on average); the coldest is January (2.2 °C).
How much does it rain in Constanța?
Constanța receives on average 467 mm of precipitation per year, spread over about 82 rainy days.
Is it sunny in Constanța?
Constanța 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 Constanța?
The heaviest 24-hour snowfall measured in Constanța between 1940 and 2025 was 3 February 1954, with 18.8 cm.
Are there tropical nights in Constanța?
Yes: Constanța has on average 59 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Constanța?
In Constanța, between 1940 and 2025, the highest apparent temperature reached 37.0 °C on 25 July 2007, and the lowest was -23.4 °C on 12 January 1950.
Compare Constanța with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Constanța