Rio Grande do Sul (Rio Grande)
December
Weather in Rio Grande do Sul for December 2025
Your guide to Rio Grande do Sul weather in December - trends and predictions
The forecast for the first days of December 2025 in Rio Grande do Sul predicts temperatures to be around 22 °C, close to the historical average.
In general, the average temperature in Rio Grande do Sul at the beginning of December is 22.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 23.1 °C by the end of December.
Rio Grande do Sul experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 238 mm.
Temperatures
Rain 🌧️
10
Dry days
21
Rainy days
0
Snow days
23°/18°
Temperatures
27 km/h
Avg max wind
76 %
Avg humidity
Rio Grande do Sul Weather December
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Temperatures trend during December in Rio Grande do Sul
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December weather in Rio Grande do Sul day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Sunny | 19° /14° | 0 mm | 8 | |
| 2 Dec. | Sunny | 22° /17° | 0.1 mm | 8 | |
| 3 Dec. |  Patchy rain possible | 23° /19° | 0.2 mm | 8 | |
| 4 Dec. | Patchy rain possible | 23° /20° | 0.5 mm | 8 | |
| 5 Dec. |  Partly cloudy | 25° /18° | 0 mm | 9 | |
| 6 Dec. |  Moderate or heavy rain shower | 24° /20° | 26.4 mm | 8 | |
| 7 Dec. |  Overcast | 21° /15° | 0 mm | 8 | |
| 8 Dec. | Partly cloudy | 19° /14° | 0 mm | 8 | |
| 9 Dec. |  Cloudy | 20° /15° | 0 mm | 8 | |
| 10 Dec. | Patchy rain possible | 21° /18° | 2.4 mm | 8 | |
| 11 Dec. | Cloudy | 22° /19° | 0 mm | 8 | |
| 12 Dec. | Overcast | 23° /19° | 0 mm | 8 | |
| 13 Dec. | Moderate or heavy rain shower | 24° /20° | 12 mm | 8 | |
| 14 Dec. | Moderate or heavy rain shower | 23° /19° | 67.5 mm | 8 | |
| 15 Dec. | Moderate rain at times | 21° /18° | 19 mm | 8 | |
| 16 Dec. | Moderate rain at times | 22° /18° | 5.3 mm | 8 | |
| 17 Dec. |  Heavy rain at times | 22° /17° | 4.9 mm | 8 | |
| 18 Dec. | Patchy rain possible | 23° /18° | 0.4 mm | 8 | |
| 19 Dec. | Moderate or heavy rain shower | 24° /19° | 13.5 mm | 8 | |
| 20 Dec. | Patchy rain possible | 26° /19° | 3.8 mm | 9 | |
| 21 Dec. | Overcast | 21° /17° | 0 mm | 8 | |
| 22 Dec. | Patchy rain possible | 20° /15° | 3.2 mm | 8 | |
| 23 Dec. | Sunny | 23° /17° | 0 mm | 9 | |
| 24 Dec. | Patchy rain possible | 25° /19° | 5.6 mm | 9 | |
| 25 Dec. | Patchy rain possible | 22° /18° | 2.5 mm | 8 | |
| 26 Dec. | Moderate rain at times | 23° /15° | 1.7 mm | 8 | |
| 27 Dec. | Patchy rain possible | 25° /16° | 2.1 mm | 9 | |
| 28 Dec. | Patchy rain possible | 23° /17° | 1.2 mm | 8 | |
| 29 Dec. | Patchy rain possible | 22° /19° | 0.7 mm | 8 | |
| 30 Dec. | Moderate rain at times | 24° /19° | 2.4 mm | 8 | |
| 31 Dec. | Patchy rain possible | 23° /20° | 0.6 mm | 8 | |
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Important Notice
Our weather forecast for Rio Grande do Sul in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Rio Grande do Sul forecast closer to your planned date for the most up-to-date weather information.
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Rio Grande do Sul in December - FAQ
What are the expected maximum and minimum temperatures in Rio Grande do Sul during December?
During December, expect a variety of temperatures with highs around 23° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Rio Grande do Sul during December?
Significant rainfall exceeding 238 mm is expected in Rio Grande do Sul during December, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Rio Grande do Sul during December?
The average wind speed in Rio Grande do Sul during December is 27 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Rio Grande do Sul
Explore the daily rainfall trends and prepare for Rio Grande do Suls December weather 💧
Typically, Rio Grande do Sul has 21 rainy days in December with a total of 238 mm of rainfall.
UV exposure in Rio Grande do Sul during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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Where is Rio Grande do Sul?Get accurate weather forecasts for Rio Grande do Sul, located at latitude -32.035 and longitude -52.099. Stay updated with localized weather information tailored for Rio Grande do Sul.
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