BrazilAverage weather for Porto Alegre in December
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.
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. There are plenty of days with a good chance of precipitation.
With the temperature difference between day and night, it’s smart to wear layers.
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.
In December, there is an average of 270 mm of precipitation, spread over 12 days. The wind speed is around 3 Bft, mostly coming from the East.
Porto Alegre in December |
New York | ||
|---|---|---|---|
 Average temperature |
31°C | 9°C | |
 Max. temperature |
33°C | 12°C | |
| Min. temperature |
29°C | -5°C | |
 Total precipitation |
270 mm | 133 mm | |
| Rainy days |
12 days | 17 days | |
November
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.
Is December a good time to visit Porto Alegre?
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.
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.
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.
Daily Temperature in December in Porto Alegre
This chart shows the average daily high and low temperatures in December for Porto Alegre, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in December in Porto Alegre
The chart below shows the average daily precipitation in December for Porto Alegre, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for December, you can expect about 12 days of precipitation in Porto Alegre.
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.
Temperature in December in Porto Alegre over the years
This chart shows the average temperature in December in Porto Alegre, measured in degrees Celsius, over the past few years.
Total precipitation in December in Porto Alegre over the years
This chart shows the average precipitation in December in Porto Alegre, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
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.
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.
Or check out the climate of Porto Alegre for all months at once
