Climate averages 1991–2020
Bucharest weather
in September.
A warm, moderately wet month: the 4th warmest and the 9th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Bucharest: daytime highs average 23.4°C and nights cool to about 13.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 60 mm of rain on roughly 6 days, which makes September a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 34 min on an average September day.
The nearest other city in this atlas is Ploieşti (58 km away). In September its highs average 21.6°C, 1.8°C cooler than Bucharest, with 57 mm of rain.
Among the 27 cities listed in Romania, Bucharest ranks 2nd of 27 for the warmest September highs and joint 14th of 27 for the driest September (rainfall, lowest first). The mean September high of those 27 cities is 21.3°C; Bucharest is 2.1°C warmer than that mean.
From September to October, average highs fall by 6.4°C to 17.0°C, and monthly rainfall falls from 60 mm to 53 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bucharest climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.8°C-4.6°C | -4.6°C | 39 | 6.5 | 9.39 h |
| February | 6.0°C-3.0°C | -3.0°C | 33 | 6.3 | 10.410 h |
| March | 11.3°C1.1°C | 1.1°C | 46 | 8.4 | 11.912 h |
| April | 17.3°C6.3°C | 6.3°C | 57 | 9.5 | 13.413 h |
| May | 22.6°C11.8°C | 11.8°C | 70 | 11.1 | 14.815 h |
| June | 26.4°C16.1°C | 16.1°C | 88 | 12.3 | 15.515 h |
| July | 28.6°C18.3°C | 18.3°C | 79 | 10.0 | 15.215 h |
| August | 28.8°C18.4°C | 18.4°C | 49 | 7.4 | 14.014 h |
| September, selected | 23.4°C13.6°C | 13.6°C | 60 | 6.3 | 12.613 h |
| October | 17.0°C8.2°C | 8.2°C | 53 | 7.1 | 11.011 h |
| November | 10.3°C2.8°C | 2.8°C | 45 | 6.8 | 9.710 h |
| December | 4.3°C-2.5°C | -2.5°C | 44 | 6.9 | 8.99 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Ploieşti in SeptemberRomania · 58 kmHigh 21.6°C · Low 11.6°C · 57 mm rain
- Ruse in SeptemberBulgaria · 66 kmHigh 24.1°C · Low 14.5°C · 55 mm rain
- Buzău in SeptemberRomania · 98 kmHigh 22.6°C · Low 12.9°C · 53 mm rain
- Piteşti in SeptemberRomania · 109 kmHigh 20.8°C · Low 11.3°C · 72 mm rain
- Braşov in SeptemberRomania · 141 kmHigh 19.3°C · Low 10.6°C · 59 mm rain
- Shumen in SeptemberBulgaria · 145 kmHigh 22.5°C · Low 12.9°C · 50 mm rain
- Râmnicu Vâlcea in SeptemberRomania · 156 kmHigh 21.3°C · Low 11.7°C · 73 mm rain
- Pleven in SeptemberBulgaria · 164 kmHigh 24.3°C · Low 14.4°C · 47 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bucharest) is explained once on the Bucharest year overview and on the Sources, method and limits page.