Weather in South America for August 2025
In general, the average temperature in South America at the beginning of August is 27.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.9 °C by the end of August.
South America experiences moderate rainfall in August, with an average of 10 rainy days and a total precipitation of 130.2 mm.
Temperatures
Rain 🌧️
South America Weather August
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2  26° | 3 28° | ||||
| 4 25° | 5 28° | 6 28° | 7 30° | 8  28° | 9  25° | 10 24° |
| 11 25° | 12 27° | 13  21° | 14 22° | 15  25° | 16 26° | 17 28° |
| 18 30° | 19  30° | 20 27° | 21 27° | 22 30° | 23 33° | 24 30° |
| 25  23° | 26 20° | 27 19° | 28 20° | 29 21° | 30 25° | 31 25° |
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Temperatures trend during August in South America
August weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Partly cloudy | 25° /17° | 0 mm | 7 | |
| 2 Aug. | Sunny | 26° /16° | 0 mm | 7 | |
| 3 Aug. | Sunny | 28° /16° | 0 mm | 8 | |
| 4 Aug. | Partly cloudy | 25° /18° | 0 mm | 7 | |
| 5 Aug. | Sunny | 28° /18° | 0 mm | 8 | |
| 6 Aug. | Sunny | 28° /19° | 0 mm | 8 | |
| 7 Aug. | Sunny | 30° /19° | 0 mm | 9 | |
| 8 Aug. | Heavy rain at times | 28° /21° | 3.5 mm | 7 | |
| 9 Aug. | Patchy rain possible | 25° /19° | 0.5 mm | 6 | |
| 10 Aug. | Sunny | 24° /17° | 14 mm | 7 | |
| 11 Aug. | Sunny | 25° /17° | 0.1 mm | 8 | |
| 12 Aug. | Sunny | 27° /18° | 0.2 mm | 7 | |
| 13 Aug. | Moderate rain at times | 21° /18° | 3 mm | 5 | |
| 14 Aug. | Patchy rain possible | 22° /16° | 2.8 mm | 6 | |
| 15 Aug. | Cloudy | 25° /17° | 0.1 mm | 7 | |
| 16 Aug. | Partly cloudy | 26° /19° | 0 mm | 8 | |
| 17 Aug. | Sunny | 28° /19° | 0 mm | 8 | |
| 18 Aug. | Sunny | 30° /19° | 0 mm | 8 | |
| 19 Aug. | Overcast | 30° /20° | 0 mm | 8 | |
| 20 Aug. | Patchy rain possible | 27° /20° | 0.8 mm | 7 | |
| 21 Aug. | Sunny | 27° /19° | 0.1 mm | 7 | |
| 22 Aug. | Sunny | 30° /19° | 0 mm | 8 | |
| 23 Aug. | Sunny | 33° /20° | 0 mm | 9 | |
| 24 Aug. | Sunny | 30° /21° | 0.4 mm | 8 | |
| 25 Aug. | Light drizzle | 23° /19° | 8.4 mm | 6 | |
| 26 Aug. | Light rain shower | 20° /15° | 20.6 mm | 5 | |
| 27 Aug. | Light rain shower | 19° /16° | 40.7 mm | 5 | |
| 28 Aug. | Light rain shower | 20° /14° | 22.1 mm | 6 | |
| 29 Aug. | Light rain shower | 21° /16° | 11.8 mm | 6 | |
| 30 Aug. | Cloudy | 25° /17° | 1.1 mm | 7 | |
| 31 Aug. | Overcast | 25° /19° | 0.1 mm | 7 | |
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Guide for South America in August
In August, Rio de Janeiro experiences mild winter weather with average temperatures ranging from 18° to 25°. At the beginning of the month, the city typically sees cooler temperatures with occasional rainfall. The average high temperature hovers around 25°, while the lows can drop to around 18°.
The sea temperature remains relatively warm, making it suitable for beach activities.
As the month progresses, Rio de Janeiro tends to become slightly warmer and drier. The average high temperature may increase to around 27°, offering more pleasant conditions for outdoor exploration and sightseeing. The evenings remain comfortable with temperatures around 20°.
The city experiences fewer rainy days towards the end of August, allowing visitors to enjoy the stunning beaches and outdoor attractions.
Overall, August in Rio de Janeiro offers a delightful blend of mild temperatures, occasional rainfall, and comfortable humidity levels. Travelers can take advantage of the pleasant weather to explore the city's iconic landmarks, indulge in water sports, or simply relax on the beautiful beaches.
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South America in August - FAQ
August rainfall patterns in South America
UV exposure in South America during August
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Where is South America?Get accurate weather forecasts for South America, located at latitude -22.906 and longitude -43.182. Stay updated with localized weather information tailored for South America.