WEATHER · CLIMATE NORMALS · 1991–2020
Brasília Climate — Averages by Month
What the weather in Brasília, BRaverages across a standard 30-year period. Each month's figure is the 1991–2020 mean temperature and total rainfall from the ERA5 reanalysis — the long-run normal a place settles around, not a forecast for any particular day.
Month-by-month normals
| Month | Avg temperature | Avg rainfall |
|---|---|---|
| January | 22.4 °C | 232.0 mm |
| February | 22.4 °C | 208.5 mm |
| March | 22.3 °C | 221.1 mm |
| April | 22.2 °C | 103.1 mm |
| May | 21.1 °C | 23.2 mm |
| June | 20.1 °C · coldest | 5.5 mm |
| July | 20.1 °C | 0.8 mm |
| August | 21.8 °C | 6.9 mm |
| September | 23.7 °C | 36.6 mm |
| October | 23.8 °C · warmest | 127.3 mm |
| November | 22.3 °C | 236.7 mm |
| December | 22.2 °C | 251.1 mm · wettest |
How to read these numbers
These are reanalysis normals, not readings from a single weather station. They come from the ERA5 0.25° (~25 km) global reanalysis grid, sampled at the grid cell nearest Brasília — centred at 15.75°S, 48.00°W. A reanalysis blends observations with a physics model onto an even grid, so a coastal or mountain city's cell can read a little cooler, warmer, wetter or drier than the city centre itself. The month-to-month shape — when it's hot, when it rains — is what these normals capture best.
“Normal” means the 1991–2020 average, the current World Meteorological Organization standard period. A normal is what a place tends toward over decades — any single day, month or year can and will depart from it.