The climate in Cornăţelu during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Cornăţelu and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 11°C (51°F) is normal.
| Daytime temperature | 24°C 75.1°F | 
|---|---|
| Nightly temperature | 10.5°C 50.8°F | 
| Average temperature | 17.2°C 63°F | 
| Daily sunshine | 7.7 hrs | 
| Avg rainfall | 45 mm 1.8 ins | 
| Rainy days | 7 days | 
| Sea temperature | 22°C 71.5°F | 
| Humidity | 75% | 
| Windspeed | 6.1kph 4 mph | 
On average September is the 6th driest month of the year in Cornăţelu with around 45mm 1.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.7 hours of sunshine per day.
				
						
						The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Cornăţelu in September 2025.
Best places to visit in September
| Hottest month: | July | 27.7°C 81.9°F | 
|---|---|---|
| Driest month: | October | 33mm 1.3ins | 
| Sunniest month: | August | 9.4hrs | 
| Coldest month: | January | 1.1°C 34°F | 
| Wettest month: | June | 83mm 3.3ins |