Brasília weather in December
In December, Brasília has an average high of 26 °C79 °F and an average low of 17 °C63 °F, with about 221 mm8.7 in of precipitation. It is the 4th warmest month of the year and the wettest.
How December compares with other months
Compared with November, December is 0.6 °C1.1 °F cooler on average and wetter by 21 mm0.8 in. Compared with January, December is about the same temperature and wetter by 12 mm0.5 in. Daylight lasts about 13.1 hours around the middle of the month. Average relative humidity is 80% and the average cloud amount 78%.
Is December a good time to visit Brasília?
December is not among the most comfortable months by our comfort score: it is fairly wet (221 mm8.7 in) and it is humid (80%). The most comfortable months in Brasília are May–August.
What to wear in December
For Brasília in December, pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
December in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Brasília | 2679 | 1763 | 2218.7 |
| Ceilândia | 2678 | 1763 | 2218.7 |
| Gama | 2680 | 1864 | 2218.7 |
| Valparaíso de Goiás | 2679 | 1864 | 2218.7 |
| Planaltina | 2781 | 1864 | 2118.3 |
| Luziânia | 2781 | 1865 | 2248.8 |
| Anápolis | 2780 | 1865 | 2379.3 |
| Goiânia | 2883 | 2067 | 2349.2 |
| Aparecida de Goiânia | 2882 | 1966 | 2158.5 |
Nearby places that are more than 1 °C1.8 °F warmer in December: Luziânia, Goiânia and Aparecida de Goiânia.
Other months in Brasília
- January26 °C78 °F / 17 °C63 °F
- February26 °C78 °F / 17 °C63 °F
- March25 °C78 °F / 17 °C62 °F
- April25 °C77 °F / 16 °C60 °F
- May25 °C77 °F / 13 °C56 °F
- June26 °C78 °F / 12 °C53 °F
- July27 °C80 °F / 12 °C53 °F
- August29 °C84 °F / 14 °C56 °F
- September31 °C88 °F / 16 °C62 °F
- October30 °C87 °F / 18 °C64 °F
- November27 °C81 °F / 17 °C63 °F
- December26 °C79 °F / 17 °C63 °F
Frequently asked questions
How warm is Brasília in December?
In December the average high in Brasília is 26 °C (79 °F) and the average low is 17 °C (63 °F).
Does it rain a lot in Brasília in December?
On average about 221 mm (8.7 in) of precipitation falls in December; it ranks 1st of the 12 months.
Is December the warmest month in Brasília?
No. The warmest month in Brasília is September, with an average high of 31 °C (88 °F). The coldest month is July, with an average low of 12 °C (53 °F).
How long is the day in Brasília in December?
In the middle of December the day in Brasília lasts about 13.1 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Brasília in December?
The average relative humidity in December is about 80%. Combined with warm days, it can feel muggy.
How cloudy is Brasília in December?
On average about 78% of the sky is covered by cloud in December. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 985 m, while Brasília lies at about 1,136 m. Temperatures on this page were therefore adjusted by −1 °C1.8 °F using the standard lapse rate of 6.5 °C per 1,000 m.