Budapest weather by month
Budapest runs from about 1°C in January to 25°C in August, with June the wettest month at 92 mm.
warmest month
August
25°C
coolest month
January
1°C
wettest month
June
92 mm
worst air month
December
28 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 1°C | 40 mm | 187 h | 27 |
| February | 8°C | 28 mm | 189 h | 16 |
| March | 9°C | 43 mm | 242 h | 20 |
| April | 13°C | 52 mm | 317 h | 10 |
| May | 18°C | 88 mm | 380 h | 7 |
| June | 22°C | 92 mm | 385 h | 7 |
| July | 25°C | 56 mm | 426 h | 5 |
| August | 25°C | 25 mm | 375 h | 7 |
| September | 18°C | 78 mm | 257 h | 7 |
| October | 11°C | 51 mm | 257 h | 9 |
| November | 4°C | 31 mm | 172 h | 20 |
| December | 2°C | 34 mm | 100 h | 28 |
About 3,287 hours of sun a year. Roughly 62 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.