Rio Grande do Sul (Rio Grande)
December
Weather in Rio Grande do Sul for December 2026
Your guide to Rio Grande do Sul weather in December - trends and predictions
In general, the average temperature in Rio Grande do Sul at the beginning of December is 23.1 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 25.6 °C by the end of December.
Rio Grande do Sul in December brings notable rainfall, with an average of 16 rainy days and a total precipitation of 182.7 mm.
Is December a good time to visit Rio Grande do Sul? check out the best time to travel to Rio Grande do Sul page.
Temperatures
Rain 🌧️
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15
Dry days
16
Rainy days
0
Snow days
24°/18°
Temperatures
26 km/h
Avg max wind
78 %
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. |  Heavy rain at times | 22° /18° | 29.2 mm | 8 | |
| 2 Dec. |  Light rain | 23° /18° | 8 mm | 9 | |
| 3 Dec. |  Sunny | 22° /16° | 0.1 mm | 9 | |
| 4 Dec. | Sunny | 22° /17° | 0 mm | 9 | |
| 5 Dec. |  Partly cloudy | 25° /18° | 0 mm | 9 | |
| 6 Dec. |  Moderate rain | 25° /20° | 13.2 mm | 9 | |
| 7 Dec. |  Overcast | 23° /18° | 0 mm | 9 | |
| 8 Dec. |  Patchy rain possible | 21° /17° | 1 mm | 8 | |
| 9 Dec. | Moderate rain | 21° /17° | 17.3 mm | 8 | |
| 10 Dec. | Light rain | 20° /18° | 8.4 mm | 8 | |
| 11 Dec. |  Cloudy | 24° /18° | 0 mm | 9 | |
| 12 Dec. | Overcast | 26° /19° | 0.1 mm | 9 | |
| 13 Dec. |  Moderate or heavy rain shower | 26° /20° | 6 mm | 9 | |
| 14 Dec. |  Heavy rain | 24° /20° | 33.7 mm | 8 | |
| 15 Dec. | Moderate rain | 23° /19° | 14.1 mm | 9 | |
| 16 Dec. | Light rain | 23° /18° | 3.6 mm | 8 | |
| 17 Dec. | Light rain | 22° /16° | 2.5 mm | 9 | |
| 18 Dec. | Patchy rain possible | 24° /18° | 0.2 mm | 9 | |
| 19 Dec. | Moderate or heavy rain shower | 26° /19° | 6.7 mm | 9 | |
| 20 Dec. | Patchy rain possible | 27° /20° | 1.9 mm | 11 | |
| 21 Dec. | Patchy rain possible | 22° /19° | 1.8 mm | 8 | |
| 22 Dec. | Light rain | 23° /18° | 6.5 mm | 6 | |
| 23 Dec. | Moderate rain | 25° /19° | 13.1 mm | 7 | |
| 24 Dec. | Light rain | 26° /20° | 2.8 mm | 11 | |
| 25 Dec. | Patchy rain possible | 24° /20° | 2.2 mm | 10 | |
| 26 Dec. | Patchy rain possible | 25° /19° | 1.2 mm | 10 | |
| 27 Dec. | Light rain | 26° /19° | 5.1 mm | 9 | |
| 28 Dec. | Patchy rain possible | 25° /19° | 2.4 mm | 9 | |
| 29 Dec. | Patchy rain possible | 25° /20° | 0.3 mm | 11 | |
| 30 Dec. | Patchy rain possible | 27° /20° | 1.2 mm | 10 | |
| 31 Dec. | Patchy rain possible | 27° /21° | 0.3 mm | 10 | |
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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 24° 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 182.7 mm is expected in Rio Grande do Sul during December, occurring over more than 16 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 26 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 16 rainy days in December with a total of 182.7 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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