Climate averages 1991–2020
Balsas weather
in December.
A hot, wet month: the 8th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Balsas: daytime highs average 30.4°C and nights cool to about 22.6°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 157 mm of rain on roughly 19 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 33 min on an average December day.
The nearest other city in this atlas is Grajaú (191 km away). In December its highs average 30.7°C, about as warm as Balsas, with 135 mm of rain.
Among the 448 cities listed in Brazil, Balsas ranks joint 71st of 448 for the warmest December highs and joint 153rd of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Balsas is 2.0°C warmer than that mean.
From December to January, average highs fall by 0.9°C to 29.5°C, and monthly rainfall rises from 157 mm to 204 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
Balsas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.5°C22.2°C | 22.2°C | 204 | 24.6 | 12.513 h |
| February | 29.6°C22.2°C | 22.2°C | 183 | 22.3 | 12.312 h |
| March | 29.6°C22.2°C | 22.2°C | 178 | 23.4 | 12.112 h |
| April | 29.9°C22.3°C | 22.3°C | 110 | 15.5 | 11.912 h |
| May | 30.9°C22.4°C | 22.4°C | 40 | 6.7 | 11.812 h |
| June | 31.9°C22.2°C | 22.2°C | 2.3 | 0.5 | 11.712 h |
| July | 32.4°C22.0°C | 22.0°C | 1.3 | 0.2 | 11.712 h |
| August | 33.9°C22.7°C | 22.7°C | 0.9 | 0.2 | 11.912 h |
| September | 35.1°C24.1°C | 24.1°C | 8.6 | 1.7 | 12.112 h |
| October | 34.0°C24.0°C | 24.0°C | 55 | 7.7 | 12.312 h |
| November | 31.6°C23.1°C | 23.1°C | 121 | 15.3 | 12.512 h |
| December, selected | 30.4°C22.6°C | 22.6°C | 157 | 19.4 | 12.613 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
- Grajaú in DecemberBrazil · 191 kmHigh 30.7°C · Low 23.2°C · 135 mm rain
- Barra do Corda in DecemberBrazil · 242 kmHigh 31.2°C · Low 23.5°C · 135 mm rain
- Araguaína in DecemberBrazil · 242 kmHigh 29.6°C · Low 22.4°C · 229 mm rain
- Imperatriz in DecemberBrazil · 275 kmHigh 30.3°C · Low 23.7°C · 144 mm rain
- Açailândia in DecemberBrazil · 330 kmHigh 30.0°C · Low 22.6°C · 165 mm rain
- Palmas in DecemberBrazil · 386 kmHigh 30.4°C · Low 23.0°C · 297 mm rain
- Bacabal in DecemberBrazil · 392 kmHigh 32.6°C · Low 24.5°C · 131 mm rain
- Codó in DecemberBrazil · 417 kmHigh 32.9°C · Low 24.3°C · 112 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 Balsas) is explained once on the Balsas year overview and on the Sources, method and limits page.