Constanţa Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Constanţa, Constanţa, Romania. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Now, let's explore all the details to give you a full picture.
On average, Constanţa receives a reasonable amount of rain/snowfall, with an annual precipitation of 549 mm (22 in). Despite this overall moderate level, the city experiences distinct dry season during certain months throughout the year, as illustrated in the precipitation charts below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Despite minor fluctuations, Constanţa enjoys fairly consistent precipitation throughout the year. In September, you can expect around 55 mm (2.2 in) of precipitation, while in August, Constanţa receives about 36 mm (1.4 in).
September, the wettest month, has a maximum daytime temperature of 24°C (75°F). The city receives 228 hours of sunshine in this period. During the driest month August you can expect a temperature of 29°C (84°F). For more detailed insights into the city's temperatures, visit our Constanţa Temperature page.
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Explore Constanţa's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Constanţa spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Romania: City Comparison
The map below shows the annual precipitation across Romania. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Constanţa vs World: Rainfall Compared
Constanţa's average annual precipitation is 549 mm (22 in). Let's compare this to some popular worldwide tourist destinations:
In Barcelona, Spain, the average annual precipitation is 644 mm (25 in), evenly distributed across the year with no extreme wet or dry seasons.
Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.
Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.
Mumbai, India, experiences a tropical monsoon climate with 1860 mm (73 in) of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
Precipitation has a very strong role in determining the local climate and ecosystem:
- Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
- Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.
- The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
- Approximately 70% of lightning bolts strike land rather than oceans.
- A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.
For more detailed information about Constanţa's weather, including sunshine hours, humidity levels, and temperature data, visit our Constanţa Climate page.
