Climate averages 1991–2020
Cruzeiro do Sul weather
in December.
A hot, very wet month: the joint 7th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Cruzeiro do Sul: daytime highs average 29.4°C and nights cool to about 22.7°C. By daytime temperature it is the joint 7th warmest of the 12 months.
Expect about 243 mm of rain on roughly 26 days, which makes December a very wet month (the 10th 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 Pucallpa (223 km away). In December its highs average 29.6°C, about as warm as Cruzeiro do Sul, with 289 mm of rain.
Among the 448 cities listed in Brazil, Cruzeiro do Sul ranks joint 147th of 448 for the warmest December highs and joint 364th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Cruzeiro do Sul is 0.9°C warmer than that mean.
From December to January, average highs rise by 0.2°C to 29.6°C, and monthly rainfall falls from 243 mm to 239 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
Cruzeiro do Sul climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.6°C22.7°C | 22.7°C | 239 | 25.3 | 12.513 h |
| February | 29.5°C22.7°C | 22.7°C | 244 | 23.8 | 12.412 h |
| March | 29.4°C22.7°C | 22.7°C | 282 | 27.4 | 12.112 h |
| April | 29.0°C22.5°C | 22.5°C | 221 | 24.4 | 11.912 h |
| May | 28.3°C22.0°C | 22.0°C | 134 | 20.6 | 11.812 h |
| June | 27.9°C21.4°C | 21.4°C | 81 | 15.3 | 11.712 h |
| July | 28.5°C21.0°C | 21.0°C | 56 | 11.7 | 11.712 h |
| August | 30.2°C21.6°C | 21.6°C | 71 | 12.9 | 11.912 h |
| September | 30.6°C22.4°C | 22.4°C | 109 | 17.0 | 12.112 h |
| October | 30.3°C22.7°C | 22.7°C | 176 | 22.6 | 12.312 h |
| November | 29.6°C22.7°C | 22.7°C | 221 | 23.7 | 12.512 h |
| December, selected | 29.4°C22.7°C | 22.7°C | 243 | 26.4 | 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
- Pucallpa in DecemberPeru · 223 kmHigh 29.6°C · Low 23.3°C · 289 mm rain
- San Juan, Peru in DecemberPeru · 433 kmHigh 29.9°C · Low 23.4°C · 263 mm rain
- Iquitos in DecemberPeru · 436 kmHigh 29.9°C · Low 23.4°C · 263 mm rain
- Huánuco (approximate) in DecemberPeru · 468 kmHigh 23.5°C · Low 16.7°C · 138 mm rain
- Huancayo in DecemberPeru · 566 kmHigh 14.2°C · Low 6.0°C · 214 mm rain
- Rio Branco in DecemberBrazil · 595 kmHigh 29.5°C · Low 23.0°C · 246 mm rain
- Chosica in DecemberPeru · 652 kmHigh 24.1°C · Low 18.2°C · 20 mm rain
- Cusco in DecemberPeru · 661 kmHigh 15.9°C · Low 8.4°C · 196 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 Cruzeiro do Sul) is explained once on the Cruzeiro do Sul year overview and on the Sources, method and limits page.