September · Romania
Best time to visit Constanța in September Weather, crowds & prices
Weather in Constanța in September
Average temperature 22°C, 61 mm of rain, about 16 days with 6+ hours of sunshine and 69% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
7.9/10
Ranked #4 of 12 months
- Avg temp
- 22°C
- Rainfall
- 61 mm
- Humidity
- 69%
- Days with 6h+ sun
- 16
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Constanța scores 7.9/10 for beach and coastal travel - an above-average month (#4 of 12). Expect around 22°C, 61 mm of rain, and roughly 16 days with 6+ hours of sunshine this month.
Constanța joins a Roman mosaic and a casino landmark to Black Sea beaches and the Danube delta gateway.
September in Constanța — reliably good (4th best month)
With 22°C (71°F) on average, September delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
Budget for roughly 61 mm of rain this month — a flexible day or two helps — with about 16 days with 6+ hours of sunshine and 12.3 hours of daylight to work around it.
That is 7.9/10 on the same scale — 4th of 12 months, versus 9.9/10 for the best month here.
Pack light clothing, swimwear and real sun protection, a packable rain layer.
Budget for mid-season pricing, and crowds are moderate.
If your dates are flexible, July is materially better in Constanța — 2 points higher on the same scale.
Frequently asked
- What is the weather like in Constanța in September?
- In September, Constanța averages 22°C, 61 mm of rain, and about 16 days with 6+ hours of sunshine. Its climate-comfort score is 7.9/10.
- Is September a good time to visit Constanța?
- September earns a 7.9/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Constanța in September?
- Expect about 61 mm of rain in September. Average humidity is 69% and there are about 16 days with 6+ hours of sunshine.
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