Last updated: March 2, 2024
The weather in Rio de Janeiro, Brazil, during August is characterized by an average temperature of 21°C (70°F). Highs can soar to 32°C (90°F), while lows may dip to 15°C (59°F). Typically, the humidity level in Rio de Janeiro throughout August hovers around 73%.
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Average temperature
Maximum temperature
Humidity
In August, Rio de Janeiro averages 75 mm (3.0 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 11 hours 20 minutes of daylight, with the sun shining for approximately 8 hours 52 minutes each day. Additionally, there is a 60% probability of sunny days during this period.
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Chance of sun
In August, the UV Index in Rio de Janeiro reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 2 | 4 | 7 | 8 | 9 | 8 | 6 | 3 | 1 | 1 | 0 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||