BrazilThe weather in December in Rio de Janeiro
It's hot in December in Rio de Janeiro with an average temperature of 31°C. Temperatures this month range from a low of 28°C to a high of 33°C. At night, you can expect temperatures between 22°C and 24°C.
December is a good month to be in Rio de Janeiro for sunny weather. You’ll have high temperatures and not too much 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 Rio de Janeiro, 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 38°C in 2016, Rio de Janeiro reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 22°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 16°C to a highest value of 28°C.
Rainfall amount
In December, there is an average of 78 mm of precipitation, spread over 12 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Daily weather in December for Rio de Janeiro
Click on any day in December to get detailed info about the usual weather on that day in Rio de Janeiro. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| Rio de Janeiro | New York | |
|---|---|---|
| Average temperature | 31°C | 9°C |
| Max. temperature | 33°C | 12°C |
| Min. temperature | 22°C | -5°C |
| Total precipitation | 78 mm | 133 mm |
| Rainy days | 12 days | 17 days |
Start of December
The month of December starts in Rio de Janeiro with hot temps, averaging around 30°C during the day and nights around 23°C.
Mid December
By mid-December, daytime temps rise to around 32°C, with nights around 24°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of December
By the end of December, the average daytime temperature in Rio de Janeiro is around 32°C, while nighttime temps are about 24°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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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 Rio de Janeiro 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 Salvador, Pipa, Recife, or explore other destinations in Brazil.
Temperature charts
These charts show the average temperatures in December in Rio de Janeiro, Brazil. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in Rio de Janeiro
Temperature in December in Rio de Janeiro over the years
Precipitation charts
These charts show the average amount of precipitation in December in Rio de Janeiro, 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 Rio de Janeiro
Total precipitation in December in Rio de Janeiro over the years
Daily UV index in December in Rio de Janeiro
This chart shows the average daily UV index in December in Rio de Janeiro, 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 Rio de Janeiro
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Average weather in Rio de Janeiro by month
Click on a month below to see detailed weather info for Rio de Janeiro. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.