Your trips
Organise your trips easily with tabs
London
Bucharest
Any date
+ Search
background

Bucharest in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Bucharest in September will be like? Take a look at our weather guide for Bucharest, based on historical data.
Check flight prices to Bucharest on Avionero:
September

Weather in Bucharest in September 2025

Great Weather
Warm
☀️
Sunny
September is an ideal time to visit Bucharest if you're seeking a destination with brilliant weather. Anticipate average maximum temperatures of +24°C and about 17 sunny days, ensuring you'll have ample opportunities to soak up the sunshine. It's worth noting, though, that there may be some rainfall, with approximately 45 mm of precipitation over an average of 8 rainy days. So, prepare your sunglasses, a beach towel, and great walking shoes, as it's most likely going to be amazing weather. Search flights in one click on Avionero.

Average weather

☀️
+24°C
Avg. max. temperature
+3°C
Min.
+36°C
Max.
45 mm
Total precipitation
69%
Avg. humidity
2 m/s
Avg. wind
17 ☀️
Sunny Days
3 ⛅️
Cloudy
8 🌦
Rainy
Our opinion: Bucharest has great weather in September.

Average temperature in Bucharest in September

Here are the expected maximum, average and minimum temperatures in Bucharest for September based on the historical data.
Last Year
Historical Data

Going from a maximum of +33°C during the day to a minimum of +14°C during the night, the temperature in September averages around +29°C.

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

Bucharest weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
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 mm45 mm40 mm
Wind
2 m/s2 m/s2 m/s
Humidity
64%69%78%
Air pressure
1013 HPa1016 HPa1019 HPa
Sunny days
171714
Cloudy days
238
Rainy days
789
Snowy days
000

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

Wind speed in Bucharest in September based on historical data.
Last Year
Historical Data

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

Amount of rainfall in mm during September in Bucharest based on historical data.
Last Year
Historical Data
Typically, there is a 17% chance of rain on an average day in September, with total rainfall of approximately 19 mm. The maximum amount of rainfall per day is around 7 mm, which is considered light rain. On average, there are about 5 rainy days during September, so prepare to bring an umbrella.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Bucharest wettest month is June, where a typical day has a 30% chance of precipitation and 85 mm of rainfall per day. January, on the other hand, is the driest month with a mere 10% chance of precipitation and 11 mm of rainfall per day.

How was the weather last September in Bucharest?

This is the weather in Bucharest in September 2023:
1 September
☀️
+30°C
2 September
☀️
+30°C
3 September
☀️
+33°C
4 September
☀️
+25°C
5 September
☀️
+27°C
6 September
☀️
+29°C
7 September
☀️
+30°C
8 September
☀️
+28°C
9 September
☀️
+30°C
10 September
☀️
+28°C
11 September
☀️
+28°C
12 September
☀️
+31°C
13 September
☀️
+32°C
14 September
☀️
+33°C
15 September
☀️
+28°C
16 September
☁️
+25°C
17 September
☀️
+27°C
18 September
☀️
+26°C
19 September
☀️
+27°C
20 September
☀️
+27°C
21 September
☀️
+30°C
22 September
☀️
+32°C
23 September
☀️
+33°C
24 September
☀️
+32°C
25 September
☀️
+29°C
26 September
☀️
+30°C
27 September
☀️
+28°C
28 September
☀️
+28°C
29 September
☀️
+29°C
30 September
☀️
+29°C
In September 2023 Bucharest had 29 sunny days, 1 cloudy days, and 0 rainy days. The average maximum temperature was +29°C, with an absolute maximum of +33°C and a minimum of +25°C. The average humidity was 57%, with a maximum of 100% and a minimum of 19%. The average wind speed was 4 m/s, with a maximum of 12 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change over Years

This is how Bucharest climate have been changing during last 43 years period.

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

Frequently asked questions about the weather in Bucharest in September:

Is September a good time to visit Bucharest?

Yes, September is a great time to go to Bucharest, the weather couldn’t be better. Be ready to get outside, explore and enjoy. Check what other months that are a good time to visit Bucharest.

Can you sunbathe in Bucharest in September?

September is warm in Bucharest. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Bucharest rainy in September?

Bucharest is usually dry in September. Plan your packing around outdoor activities and exploring.

Is it sunny in Bucharest in September?

The amount of sunny days in Bucharest during September varies; prepare for a mix of clouds and sun.

Other cities in Romania

Check out the weather for 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.