Bucharest weather by month
Bucharest runs from about 1°C in January to 28°C in July, with April the wettest month at 85 mm.
warmest month
July
28°C
coolest month
January
1°C
wettest month
April
85 mm
worst air month
December
37 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 1°C | 41 mm | 175 h | 36 |
| February | 8°C | 18 mm | 193 h | 29 |
| March | 8°C | 66 mm | 214 h | 23 |
| April | 15°C | 85 mm | 307 h | 12 |
| May | 16°C | 36 mm | 330 h | 9 |
| June | 25°C | 18 mm | 428 h | 8 |
| July | 28°C | 31 mm | 425 h | 8 |
| August | 27°C | 27 mm | 376 h | 8 |
| September | 20°C | 84 mm | 294 h | 9 |
| October | 13°C | 9 mm | 287 h | 13 |
| November | 5°C | 63 mm | 169 h | 26 |
| December | 4°C | 84 mm | 101 h | 37 |
About 3,299 hours of sun a year. Roughly 57 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-22. Full method, licences and the list of sources we rejected are on the methodology page.