Weather in Porto Alegre in December 2024
- December is usually the driest month of the year in Porto Alegre
Average weather
Average temperature in Porto Alegre in December
The temperature in December is +29°C on average, with a range between a maximum of +38°C during the day and a minimum of +16°C at night.
The average maximum temperature goes down 36% by the end of the month, compared with the beginning of the month, from +33°C to +25°C.
Is Porto Alegre warm or cold in December?
Porto Alegre is typically warm in December.
Maximum temperatures go up compared to the previous month from +26°C to +29°C. The minimum temperature also goes up from +17°C to +20°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
December is one of the warmest months in Porto Alegre, here is the comparison with other months:
Climate in Porto Alegre in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +26°C | +29°C | +30°C | ||||
| Min. temperature | ||||||
| +9°C | +12°C | +13°C | ||||
| Max. temperature | ||||||
| +40°C | +39°C | +39°C | ||||
| Rainfall | ||||||
| 124 mm | 115 mm | 127 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 76% | 75% | 76% | ||||
| Air pressure | ||||||
| 1012 HPa | 1010 HPa | 1010 HPa | ||||
| Sunny days | ||||||
| 8 | 8 | 6 | ||||
| Cloudy days | ||||||
| 6 | 6 | 5 | ||||
| Rainy days | ||||||
| 14 | 15 | 18 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
December typically has worse weather conditions compared to November. It’s getting warmer as December arrives. The average maximum temperature goes up from +26°C to +29°C during the day. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 124 mm to 115 mm. It feels drier, as humidity decreases from 76% to 75%. The average wind speed doesn’t change much during December, staying around 3 m/s. The amount of sunny days stay about the same, averaging 8 sunny days during the month.
January brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Porto Alegre is gradually decreasing during December, going from 4 m/s to 3 m/s over the course of the month.
Rain
How was the weather last December in Porto Alegre?
Climate Change over Years
The climate in Porto Alegre in December has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+23°C) and the highest in 2012 (+26°C). The driest year was 2004 with only 1129 mm of rainfall, and the wettest year was 1998 with 2041 mm.
FAQ
Is December a good time to visit Porto Alegre?
Can you sunbathe in Porto Alegre in December?
Is Porto Alegre rainy in December?
Is it sunny in Porto Alegre in December?
Other cities in Brazil
Monthly weather in Porto Alegre
Source of the data
For this page, we’ve looked at the typical weather in Porto Alegre, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.