Last updated: March 2, 2024
The weather in Rio Branco, Brazil, during May is characterized by an average temperature of 25°C (77°F). Highs can soar to 33°C (92°F), while lows may dip to 17°C (63°F). Typically, the humidity level in Rio Branco throughout May hovers around 84%.
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Average temperature
Maximum temperature
Humidity
In May, Rio Branco averages 83 mm (3.3 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 11 hours 38 minutes of daylight, with the sun shining for approximately 8 hours 56 minutes each day. Additionally, there is a 37% probability of sunny days during this period.
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Rainy days
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Chance of sun
In May, the UV Index in Rio Branco reaches a maximum of 12, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 10 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 | 2 | 4 | 7 | 10 | 12 | 12 | 9 | 6 | 3 | 1 | 1 | 0 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | ||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | ||||