Climate averages 1991–2020
Belém weather
in December.
A hot, wet month: the 5th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Belém: daytime highs average 30.7°C and nights cool to about 24.9°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 108 mm of rain on roughly 18 days, which makes December a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 12 min on an average December day.
The nearest other city in this atlas is Barcarena (15 km away). In December its highs average 30.6°C, about as warm as Belém, with 103 mm of rain.
Among the 448 cities listed in Brazil, Belém ranks joint 62nd of 448 for the warmest December highs and 93rd of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Belém is 2.3°C warmer than that mean.
From December to January, average highs fall by 1.6°C to 29.1°C, and monthly rainfall rises from 108 mm to 232 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
Belém climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.1°C24.3°C | 24.3°C | 232 | 27.0 | 12.212 h |
| February | 28.6°C24.1°C | 24.1°C | 317 | 27.2 | 12.212 h |
| March | 28.5°C24.1°C | 24.1°C | 404 | 30.4 | 12.112 h |
| April | 28.6°C24.2°C | 24.2°C | 394 | 29.4 | 12.112 h |
| May | 29.1°C24.3°C | 24.3°C | 256 | 26.9 | 12.112 h |
| June | 29.5°C24.3°C | 24.3°C | 107 | 20.0 | 12.012 h |
| July | 29.8°C24.1°C | 24.1°C | 68 | 15.0 | 12.012 h |
| August | 30.9°C24.4°C | 24.4°C | 36 | 10.0 | 12.112 h |
| September | 31.7°C24.6°C | 24.6°C | 24 | 6.7 | 12.112 h |
| October | 32.1°C24.8°C | 24.8°C | 27 | 6.4 | 12.112 h |
| November | 31.9°C25.0°C | 25.0°C | 44 | 7.3 | 12.212 h |
| December, selected | 30.7°C24.9°C | 24.9°C | 108 | 17.8 | 12.212 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
- Barcarena in DecemberBrazil · 15 kmHigh 30.6°C · Low 25.0°C · 103 mm rain
- Ananindeua in DecemberBrazil · 18 kmHigh 31.1°C · Low 24.5°C · 143 mm rain
- Marituba in DecemberBrazil · 21 kmHigh 31.5°C · Low 24.4°C · 143 mm rain
- Santa Isabel do Pará in DecemberBrazil · 42 kmHigh 31.3°C · Low 24.2°C · 143 mm rain
- Abaetetuba in DecemberBrazil · 51 kmHigh 31.1°C · Low 24.8°C · 112 mm rain
- Moju in DecemberBrazil · 56 kmHigh 31.9°C · Low 24.1°C · 140 mm rain
- Castanhal in DecemberBrazil · 67 kmHigh 31.8°C · Low 24.0°C · 118 mm rain
- Cametá in DecemberBrazil · 141 kmHigh 31.4°C · Low 24.6°C · 151 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 Belém) is explained once on the Belém year overview and on the Sources, method and limits page.