Climate averages 1991–2020
Imperatriz weather
in December.
A hot, wet month: the 7th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Imperatriz: daytime highs average 30.3°C and nights cool to about 23.7°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 144 mm of rain on roughly 20 days, which makes December a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average December day.
The nearest other city in this atlas is Açailândia (64 km away). In December its highs average 30.0°C, about as warm as Imperatriz, with 165 mm of rain.
Among the 448 cities listed in Brazil, Imperatriz ranks joint 78th of 448 for the warmest December highs and 134th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Imperatriz is 1.9°C warmer than that mean.
From December to January, average highs fall by 1.1°C to 29.2°C, and monthly rainfall rises from 144 mm to 207 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
Imperatriz climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.2°C23.0°C | 23.0°C | 207 | 26.1 | 12.412 h |
| February | 29.1°C23.0°C | 23.0°C | 206 | 24.1 | 12.312 h |
| March | 29.1°C23.0°C | 23.0°C | 212 | 26.3 | 12.112 h |
| April | 29.4°C23.1°C | 23.1°C | 150 | 20.7 | 12.012 h |
| May | 30.2°C23.1°C | 23.1°C | 74 | 11.7 | 11.912 h |
| June | 32.0°C23.0°C | 23.0°C | 8.2 | 1.8 | 11.812 h |
| July | 33.2°C23.1°C | 23.1°C | 6.2 | 1.1 | 11.812 h |
| August | 34.3°C23.7°C | 23.7°C | 2.1 | 0.4 | 11.912 h |
| September | 34.5°C24.5°C | 24.5°C | 9.6 | 2.0 | 12.112 h |
| October | 33.5°C24.7°C | 24.7°C | 39 | 6.3 | 12.212 h |
| November | 31.7°C24.2°C | 24.2°C | 100 | 14.2 | 12.412 h |
| December, selected | 30.3°C23.7°C | 23.7°C | 144 | 20.0 | 12.412 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
- Açailândia in DecemberBrazil · 64 kmHigh 30.0°C · Low 22.6°C · 165 mm rain
- Grajaú in DecemberBrazil · 153 kmHigh 30.7°C · Low 23.2°C · 135 mm rain
- Marabá in DecemberBrazil · 182 kmHigh 29.8°C · Low 23.4°C · 216 mm rain
- Araguaína in DecemberBrazil · 201 kmHigh 29.6°C · Low 22.4°C · 229 mm rain
- Barra do Corda in DecemberBrazil · 249 kmHigh 31.2°C · Low 23.5°C · 135 mm rain
- Parauapebas in DecemberBrazil · 273 kmHigh 29.2°C · Low 22.7°C · 183 mm rain
- Balsas in DecemberBrazil · 275 kmHigh 30.4°C · Low 22.6°C · 157 mm rain
- Paragominas in DecemberBrazil · 282 kmHigh 32.3°C · Low 23.7°C · 113 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 Imperatriz) is explained once on the Imperatriz year overview and on the Sources, method and limits page.