Click on a day for an hourly weather forecast
The temperatures in Constanta in September are comfortable with low of 18°C and and high up to 24°C.
You can expect a few rainy days in Constanta during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Constanta in September 2025.
If you’re planning to visit Constanta in the near future, we highly recommend that you review the 14 day weather forecast for Constanta before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 1° | 6 | 19 | 6 | 60 mm | Awful | Constanta in January |
| February | 7° / 3° | 5 | 18 | 5 | 51 mm | Bad | Constanta in February |
| March | 10° / 5° | 5 | 23 | 3 | 47 mm | Bad | Constanta in March |
| April | 14° / 8° | 4 | 26 | 0 | 36 mm | Good | Constanta in April |
| May | 20° / 13° | 5 | 26 | 0 | 52 mm | Good | Constanta in May |
| June | 25° / 18° | 4 | 26 | 0 | 67 mm | Perfect | Constanta in June |
| July | 28° / 21° | 3 | 28 | 0 | 42 mm | Perfect | Constanta in July |
| August | 28° / 21° | 1 | 30 | 0 | 20 mm | Perfect | Constanta in August |
| September | 24° / 18° | 2 | 28 | 0 | 36 mm | Perfect | Constanta in September |
| October | 18° / 13° | 4 | 27 | 0 | 65 mm | Good | Constanta in October |
| November | 13° / 9° | 3 | 26 | 0 | 43 mm | Ok | Constanta in November |
| December | 8° / 4° | 5 | 23 | 3 | 52 mm | Bad | Constanta in December |