Weather in Bucharest in September 2025
Average weather
Average temperature in Bucharest in September
The temperature in September is +29°C on average, with a range between a maximum of +33°C during the day and a minimum of +14°C at night.
The average maximum temperature goes down 5% by the end of the month, compared with the beginning of the month, from +30°C to +29°C.
Is Bucharest warm or cold in September?
Bucharest is typically warm in September.
Maximum temperatures go down compared to the previous month from +30°C to +24°C. The minimum temperature also goes down from +18°C to +13°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Bucharest:
Climate in Bucharest in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +30°C | +24°C | +18°C | ||||
| Min. temperature | ||||||
| +7°C | +3°C | -6°C | ||||
| Max. temperature | ||||||
| +40°C | +36°C | +31°C | ||||
| Rainfall | ||||||
| 53 mm | 45 mm | 40 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 64% | 69% | 78% | ||||
| Air pressure | ||||||
| 1013 HPa | 1016 HPa | 1019 HPa | ||||
| Sunny days | ||||||
| 17 | 17 | 14 | ||||
| Cloudy days | ||||||
| 2 | 3 | 8 | ||||
| Rainy days | ||||||
| 7 | 8 | 9 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September often has better weather than August. It’s getting colder in September. From +30°C in the day, the average maximum temperature lowers to +24°C. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 53 mm to 45 mm. Humidity rises from 64% to 69%. The average wind speed doesn’t change much during September, staying around 2 m/s. The amount of sunny days stay about the same, averaging 17 sunny days during the month.
Next month (October) brings a further decline in the weather.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Bucharest is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Bucharest?
Climate Change over Years
The climate in Bucharest in September has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+14°C) and the highest in 2023 (+20°C). The driest year was 2000 with only 303 mm of rainfall, and the wettest year was 2014 with 1417 mm.
FAQ
Is September a good time to visit Bucharest?
Can you sunbathe in Bucharest in September?
Is Bucharest rainy in September?
Is it sunny in Bucharest in September?
Other cities in Romania
Monthly weather in Bucharest
Source of the data
For this page, we’ve looked at the typical weather in Bucharest, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
