BrazilThe weather in December in Porto Alegre
It's hot in December in Porto Alegre with an average temperature of 31°C. Temperatures this month range from a low of 29°C to a high of 33°C. At night, you can expect temperatures between 19°C and 22°C.
Looking for sun? December isn’t a good month to be in Porto Alegre. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for Porto Alegre, Brazil. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 39°C in 2021, Porto Alegre reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 22°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 12°C to a highest value of 27°C.
Rainfall amount
In December, there is an average of 270 mm of precipitation, spread over 24 days. The wind speed is around 3 Bft, mostly coming from the East.
Daily weather in December for Porto Alegre
Click on any day in December to get detailed info about the usual weather on that day in Porto Alegre. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| Porto Alegre | New York | |
|---|---|---|
| Average temperature | 31°C | 9°C |
| Max. temperature | 33°C | 12°C |
| Min. temperature | 19°C | -5°C |
| Total precipitation | 270 mm | 133 mm |
| Rainy days | 24 days | 17 days |
Start of December
The month of December starts in Porto Alegre with hot temps, averaging around 31°C during the day and nights around 20°C.
Mid December
By mid-December, daytime temps rise to around 32°C, with nights around 22°C. There’s a high chance of precipitation during this time.
End of December
By the end of December, the average daytime temperature in Porto Alegre is around 32°C, while nighttime temps are about 22°C. There’s a significant chance of many days with precipitation.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Porto Alegre for all months and discover the best travel time
Curious about the weather in other parts of Brazil? Check out the climate and weather for spots like Rio de Janeiro, Salvador, Pipa, or explore other destinations in Brazil.
Temperature charts
These charts show the average temperatures in December in Porto Alegre, Brazil. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in Porto Alegre
Temperature in December in Porto Alegre over the years
Precipitation charts
These charts show the average amount of precipitation in December in Porto Alegre, Brazil. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in Porto Alegre
Total precipitation in December in Porto Alegre over the years
Daily UV index in December in Porto Alegre
This chart shows the average daily UV index in December in Porto Alegre, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in Porto Alegre
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Average weather in Porto Alegre by month
Click on a month below to see detailed weather info for Porto Alegre. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.