Climate averages 1991–2020
Pelotas weather
in December.
A warm, wet month: the 3rd warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Pelotas: daytime highs average 25.2°C and nights cool to about 19.1°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 100 mm of rain on roughly 10 days, which makes December a wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 11 min on an average December day.
The nearest other city in this atlas is Rio Grande (37 km away). In December its highs average 23.2°C, 2.0°C cooler than Pelotas, with 86 mm of rain.
Among the 448 cities listed in Brazil, Pelotas ranks joint 424th of 448 for the warmest December highs and 88th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Pelotas is 3.3°C cooler than that mean.
From December to January, average highs rise by 1.1°C to 26.3°C, and monthly rainfall rises from 100 mm to 109 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
Pelotas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.3°C20.8°C | 20.8°C | 109 | 11.6 | 14.014 h |
| February | 26.2°C21.0°C | 21.0°C | 106 | 12.6 | 13.213 h |
| March | 25.1°C19.8°C | 19.8°C | 102 | 11.7 | 12.312 h |
| April | 22.6°C17.0°C | 17.0°C | 116 | 10.1 | 11.311 h |
| May | 19.3°C13.8°C | 13.8°C | 105 | 9.3 | 10.511 h |
| June | 17.0°C11.2°C | 11.2°C | 111 | 9.8 | 10.110 h |
| July | 16.2°C10.1°C | 10.1°C | 117 | 10.2 | 10.310 h |
| August | 17.6°C11.1°C | 11.1°C | 116 | 9.9 | 11.011 h |
| September | 18.4°C12.5°C | 12.5°C | 141 | 10.6 | 11.912 h |
| October | 20.6°C15.0°C | 15.0°C | 140 | 10.6 | 12.813 h |
| November | 22.8°C16.8°C | 16.8°C | 95 | 8.6 | 13.714 h |
| December, selected | 25.2°C19.1°C | 19.1°C | 100 | 9.8 | 14.214 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
- Rio Grande in DecemberBrazil · 37 kmHigh 23.2°C · Low 20.2°C · 86 mm rain
- Bagé in DecemberBrazil · 174 kmHigh 27.5°C · Low 17.1°C · 117 mm rain
- Cachoeira do Sul in DecemberBrazil · 200 kmHigh 28.7°C · Low 18.7°C · 132 mm rain
- Guaíba in DecemberBrazil · 208 kmHigh 28.4°C · Low 19.3°C · 124 mm rain
- Porto Alegre in DecemberBrazil · 220 kmHigh 28.4°C · Low 19.2°C · 124 mm rain
- Viamão in DecemberBrazil · 226 kmHigh 27.4°C · Low 19.2°C · 129 mm rain
- Santa Cruz do Sul in DecemberBrazil · 228 kmHigh 28.3°C · Low 18.3°C · 152 mm rain
- Alvorada in DecemberBrazil · 231 kmHigh 28.1°C · Low 19.3°C · 129 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 Pelotas) is explained once on the Pelotas year overview and on the Sources, method and limits page.