Climate averages 1991–2020
Rio do Sul weather
in December.
A warm, wet month: the 3rd warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Rio do Sul: daytime highs average 27.3°C and nights cool to about 19.0°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 148 mm of rain on roughly 16 days, which makes December a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 49 min on an average December day.
The nearest other city in this atlas is Indaial (54 km away). In December its highs average 27.3°C, about as warm as Rio do Sul, with 188 mm of rain.
Among the 448 cities listed in Brazil, Rio do Sul ranks joint 302nd of 448 for the warmest December highs and 139th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Rio do Sul is 1.1°C cooler than that mean.
From December to January, average highs rise by 0.6°C to 27.9°C, and monthly rainfall rises from 148 mm to 184 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
Rio do Sul climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.9°C20.0°C | 20.0°C | 184 | 20.3 | 13.614 h |
| February | 27.8°C20.2°C | 20.2°C | 156 | 18.5 | 13.013 h |
| March | 26.6°C19.2°C | 19.2°C | 105 | 15.1 | 12.312 h |
| April | 24.4°C16.7°C | 16.7°C | 82 | 9.3 | 11.511 h |
| May | 21.0°C13.1°C | 13.1°C | 105 | 9.2 | 10.811 h |
| June | 19.5°C11.4°C | 11.4°C | 111 | 9.7 | 10.510 h |
| July | 19.2°C10.5°C | 10.5°C | 99 | 9.8 | 10.611 h |
| August | 20.9°C11.8°C | 11.8°C | 94 | 9.3 | 11.211 h |
| September | 22.1°C13.8°C | 13.8°C | 151 | 12.4 | 11.912 h |
| October | 23.8°C15.9°C | 15.9°C | 150 | 15.1 | 12.713 h |
| November | 25.3°C17.1°C | 17.1°C | 121 | 14.7 | 13.413 h |
| December, selected | 27.3°C19.0°C | 19.0°C | 148 | 16.4 | 13.814 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
- Indaial in DecemberBrazil · 54 kmHigh 27.3°C · Low 19.6°C · 188 mm rain
- Blumenau in DecemberBrazil · 66 kmHigh 27.5°C · Low 20.2°C · 176 mm rain
- Brusque in DecemberBrazil · 73 kmHigh 27.6°C · Low 20.2°C · 176 mm rain
- Gaspar in DecemberBrazil · 75 kmHigh 27.4°C · Low 20.4°C · 176 mm rain
- Lages in DecemberBrazil · 95 kmHigh 24.5°C · Low 15.6°C · 167 mm rain
- Jaraguá do Sul in DecemberBrazil · 99 kmHigh 27.4°C · Low 20.2°C · 172 mm rain
- Camboriú in DecemberBrazil · 100 kmHigh 26.8°C · Low 21.2°C · 156 mm rain
- Balneário Camboriú in DecemberBrazil · 103 kmHigh 26.4°C · Low 21.3°C · 156 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 Rio do Sul) is explained once on the Rio do Sul year overview and on the Sources, method and limits page.