Bucharest weather in September
September in Bucharest: warm, dry, with clean air — one of the best months to visit.
#1 of 12 months in Bucharest · #2 of 604 destinations to visit in September · comfort 95/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Bucharest climate normals — September
| Daytime high | 26°C / 78°F | 🌤 warm |
|---|---|---|
| Nighttime low | 15°C / 58°F | |
| Feels like (high) | 24°C / 75°F | |
| Rainfall | 21 mm / 0.8 in | ☀️ dry |
| Rainy days | 4 days | |
| Humidity | 57% | 🍃 comfortable |
| Dew point | 11°C / 52°F | |
| Sunshine | 10 h/day | |
| Daylight | 12.5 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Bucharest in September — FAQ
- Is September a good time to visit Bucharest?
- September in Bucharest: warm, dry, with clean air — one of the best months to visit. It ranks #1 of 12 months for Bucharest on SeasonMap's comfort score (95/100).
- What is the weather like in Bucharest in September?
- In September, Bucharest averages a daily high of 25.5°C and a low of 14.6°C, with about 21 mm of rain over roughly 4 rainy days.
- What is the air quality in Bucharest in September?
- Bucharest has a mean US Air Quality Index of about 39 in September.