Rio de Janeiro
August
Weather in Rio de Janeiro for August 2025
Your guide to Rio de Janeiro weather in August - trends and predictions
The forecast for the next days in Rio de Janeiro predicts temperatures to be around 24 °C, close to the historical average.
In general, the average temperature in Rio de Janeiro at the beginning of August is 25.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.9 °C by the end of August.
Rio de Janeiro experiences moderate rainfall in August, with an average of 10 rainy days and a total precipitation of 130.2 mm.
Temperatures
Rain 🌧️
21
Dry days
10
Rainy days
0
Snow days
26°/18°
Temperatures
17 km/h
Avg max wind
71 %
Avg humidity
Rio de Janeiro Weather August
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Temperatures trend during August in Rio de Janeiro
See the weather trend as well as the moving average line
August weather in Rio de Janeiro day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Partly cloudy | 25° /17° | 0 mm | 7 | |
| 2 Aug. |  Sunny | 25° /15° | 0 mm | 1.5 | |
| 3 Aug. | Sunny | 27° /17° | 0 mm | 1.5 | |
| 4 Aug. | Partly cloudy | 29° /18° | 0 mm | 1.3 | |
| 5 Aug. |  Patchy rain possible | 24° /20° | 0.2 mm | 0.3 | |
| 6 Aug. | Patchy rain possible | 24° /18° | 0.3 mm | 6 | |
| 7 Aug. | Patchy rain possible | 25° /18° | 1.4 mm | 6 | |
| 8 Aug. | Patchy rain possible | 22° /18° | 1.6 mm | 5 | |
| 9 Aug. | Patchy rain possible | 23° /18° | 3.3 mm | 5 | |
| 10 Aug. | Patchy rain possible | 20° /17° | 2.3 mm | 5 | |
| 11 Aug. | Patchy rain possible | 21° /17° | 1.6 mm | 5 | |
| 12 Aug. | Patchy rain possible | 21° /16° | 0.6 mm | 5 | |
| 13 Aug. | Sunny | 22° /14° | 0 mm | 6 | |
| 14 Aug. | Sunny | 24° /16° | 0 mm | 6 | |
| 15 Aug. | Sunny | 26° /17° | 0 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 | |
| Next | |||||
Important Notice
Our weather forecast for Rio de Janeiro in August 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 de Janeiro forecast closer to your planned date for the most up-to-date weather information.
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Rio de Janeiro in August - FAQ
What are the expected maximum and minimum temperatures in Rio de Janeiro during August?
During August, expect a variety of temperatures with highs around 26° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Rio de Janeiro during August?
Significant rainfall exceeding 130.2 mm is expected in Rio de Janeiro during August, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Rio de Janeiro during August?
The average wind speed in Rio de Janeiro during August is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
Rio de Janeiro water temperatures in August
The average water temperature of the Atlantic Ocean near Rio de Janeiro in August is 21.1 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Rio de Janeiro in August?
- The average water temperature in Rio de Janeiro in August is 21.1 °C.
- Can you swim in Rio de Janeiro in August?
- Comfortably warm for most people. Sensitive swimmers might prefer a light rash-guard, but wetsuits are rarely needed.
August rainfall patterns in Rio de Janeiro
Explore the daily rainfall trends and prepare for Rio de Janeiros August weather 💧
UV exposure in Rio de Janeiro during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
Quick links
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