The climate in Pietroasa during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Pietroasa and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 20°C (67°F), whilst at night 9°C (48°F) is normal.
| Daytime temperature | 19.6°C 67.2°F | 
|---|---|
| Nightly temperature | 8.7°C 47.6°F | 
| Average temperature | 14.1°C 57.4°F | 
| Daily sunshine | 7.2 hrs | 
| Avg rainfall | 52 mm 2 ins | 
| Rainy days | 9 days | 
| Sea temperature | 21.1°C 69.9°F | 
| Humidity | 77% | 
| Windspeed | 9.4kph 6 mph | 
On average September is the 6th driest month of the year in Pietroasa with around 52mm 2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.2 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 Pietroasa in September 2025.
Best places to visit in September
| Hottest month: | July | 22.8°C 73°F | 
|---|---|---|
| Driest month: | March | 40mm 1.6ins | 
| Sunniest month: | August | 8.8hrs | 
| Coldest month: | January | -0.4°C 31.3°F | 
| Wettest month: | June | 110mm 4.3ins |