Ouro Preto weather by month
Ouro Preto runs from about 17°C in June to 21°C in March, with January the wettest month at 313 mm.
warmest month
March
21°C
coolest month
June
17°C
wettest month
January
313 mm
worst air month
August
9 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 21°C | 313 mm | 249 h | 6 |
| February | 21°C | 190 mm | 271 h | 6 |
| March | 21°C | 200 mm | 285 h | 7 |
| April | 20°C | 32 mm | 322 h | 8 |
| May | 19°C | 8 mm | 321 h | 9 |
| June | 17°C | 0 mm | 313 h | 7 |
| July | 17°C | 4 mm | 314 h | 8 |
| August | 17°C | 9 mm | 322 h | 9 |
| September | 20°C | 5 mm | 331 h | 8 |
| October | 20°C | 162 mm | 264 h | 8 |
| November | 19°C | 207 mm | 237 h | 8 |
| December | 21°C | 238 mm | 254 h | 6 |
About 3,483 hours of sun a year. Roughly 136 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 2026-05-24. Full method, licences and the list of sources we rejected are on the methodology page.