Last updated: March 2, 2024
The weather in Rio Branco, Brazil, during December is characterized by an average temperature of 26°C (79°F). Highs can soar to 33°C (92°F), while lows may dip to 22°C (72°F). Typically, the humidity level in Rio Branco throughout December hovers around 88%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In December, Rio Branco averages 305 mm (12.0 inches) of rainfall, typically over the course of 26 rainy days. The month enjoys an average of 12 hours 41 minutes of daylight, with the sun shining for approximately 8 hours 2 minutes each day. Additionally, there is a 8% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In December, the UV Index in Rio Branco reaches a maximum of 14, 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 | 3 | 5 | 9 | 13 | 14 | 14 | 12 | 8 | 5 | 2 | 1 | 0 | 0 |
| Exposure | Moderate | VeryHigh | Extreme | VeryHigh | Moderate | Low | |||||||
| Time to burn | 30 min | 15 min | 10 min | 15 min | 30 min | 45 min | |||||||