Constanța weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: May – September
What is the weather like in Constanța in December?
In December, Constanța is cold: daytime highs average 7 °C, and nights cool down to about 2 °C. The sea averages 10.0 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. Rain falls on about 7 days, adding up to 42 mm. Snow falls on about 2 days. All in all, December is not an ideal month for a holiday in Constanța.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 45 | 23 | 24 |
| Day | 12° | 7° | 5° |
| Night | 7° | 2° | 0° |
| Sea | 14° | 10° | 7° |
| Sun | 3 h | 3 h | 3 h |
| Rain days | 7 | 7 | 7 |
More details for December
- Daylight
- 8 h 54 min07:34 – 16:28
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 20 km/haverage daily peakAll months
- Cloud cover
- 66 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 2 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/Bucharest
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %78 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Warm jacket
Constanța in December: quick answers
Is Constanța hot in December?
No. In December, Constanța is cold: daytime highs average 7 °C and nights drop to about 2 °C.
Can you swim in Constanța in December?
Only if you don't mind cold water: in December the sea averages just 10.0 °C. Comfortable swimming is possible from June to September.
Does it rain much in Constanța in December?
Rain falls on about 7 days, adding up to 42 mm.
Constanța month by month
The whole year in ConstanțaAll destinations: RomaniaWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences