Brasília weather by month
Brasília runs from about 19°C in June to 24°C in September, with November the wettest month at 323 mm.
warmest month
September
24°C
coolest month
June
19°C
wettest month
November
323 mm
worst air month
December
9 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 22°C | 220 mm | 289 h | 7 |
| February | 22°C | 220 mm | 264 h | 7 |
| March | 22°C | 117 mm | 297 h | 9 |
| April | 22°C | 48 mm | 327 h | 7 |
| May | 21°C | 0 mm | 343 h | 6 |
| June | 19°C | 1 mm | 321 h | 8 |
| July | 19°C | 0 mm | 336 h | 5 |
| August | 21°C | 0 mm | 349 h | 5 |
| September | 24°C | 0 mm | 342 h | 9 |
| October | 24°C | 103 mm | 282 h | 7 |
| November | 21°C | 323 mm | 261 h | 7 |
| December | 22°C | 218 mm | 272 h | 9 |
About 3,683 hours of sun a year. Roughly 123 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 2026-05-23. Full method, licences and the list of sources we rejected are on the methodology page.