Climate averages 1991–2020
Formosa, Brazil weather
in December.
A warm, very wet month: the joint 7th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Formosa, Brazil: daytime highs average 27.2°C and nights cool to about 19.5°C. By daytime temperature it is the joint 7th warmest of the 12 months.
Expect about 245 mm of rain on roughly 21 days, which makes December a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 02 min on an average December day.
The nearest other city in this atlas is Planaltina (Goias), Brazil (31 km away). In December its highs average 26.5°C, 0.7°C cooler than Formosa, Brazil, with 247 mm of rain.
Among the 448 cities listed in Brazil, Formosa, Brazil ranks joint 307th of 448 for the warmest December highs and joint 371st of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Formosa, Brazil is 1.2°C cooler than that mean.
From December to January, average highs rise by 0.1°C to 27.3°C, and monthly rainfall falls from 245 mm to 202 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Formosa, Brazil climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.3°C19.5°C | 19.5°C | 202 | 18.7 | 12.913 h |
| February | 27.5°C19.3°C | 19.3°C | 161 | 16.8 | 12.613 h |
| March | 27.2°C19.2°C | 19.2°C | 173 | 18.3 | 12.212 h |
| April | 27.1°C18.8°C | 18.8°C | 69 | 9.9 | 11.812 h |
| May | 26.7°C17.4°C | 17.4°C | 14 | 3.0 | 11.411 h |
| June | 26.1°C16.1°C | 16.1°C | 3.6 | 0.6 | 11.211 h |
| July | 26.3°C15.7°C | 15.7°C | 0.3 | 0.0 | 11.311 h |
| August | 28.1°C16.9°C | 16.9°C | 4.3 | 1.1 | 11.612 h |
| September | 30.3°C19.2°C | 19.2°C | 23 | 3.8 | 12.012 h |
| October | 30.1°C20.2°C | 20.2°C | 103 | 11.5 | 12.412 h |
| November | 27.4°C19.4°C | 19.4°C | 218 | 20.6 | 12.813 h |
| December, selected | 27.2°C19.5°C | 19.5°C | 245 | 20.5 | 13.013 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Planaltina (Goias), Brazil in DecemberBrazil · 31 kmHigh 26.5°C · Low 18.9°C · 247 mm rain
- Planaltina (Federal District), Brazil in DecemberBrazil · 35 kmHigh 26.9°C · Low 19.2°C · 219 mm rain
- Sobradinho II in DecemberBrazil · 55 kmHigh 26.1°C · Low 18.4°C · 218 mm rain
- São Sebastião (Federal District), Brazil in DecemberBrazil · 62 kmHigh 26.3°C · Low 18.5°C · 225 mm rain
- Brasília in DecemberBrazil · 69 kmHigh 25.9°C · Low 18.4°C · 243 mm rain
- Águas Claras in DecemberBrazil · 81 kmHigh 25.5°C · Low 18.1°C · 243 mm rain
- Riacho Fundo II in DecemberBrazil · 86 kmHigh 25.4°C · Low 17.9°C · 245 mm rain
- Cidade Ocidental in DecemberBrazil · 90 kmHigh 27.2°C · Low 19.2°C · 245 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Formosa) is explained once on the Formosa, Brazil year overview and on the Sources, method and limits page.