Last updated: March 2, 2024
The weather in Rio de Janeiro, Brazil, during May is characterized by an average temperature of 23°C (73°F). Highs can soar to 31°C (88°F), while lows may dip to 17°C (63°F). Typically, the humidity level in Rio de Janeiro throughout May hovers around 81%.
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Average temperature
Maximum temperature
Humidity
In May, Rio de Janeiro averages 77 mm (3.1 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 10 hours 59 minutes of daylight, with the sun shining for approximately 9 hours 5 minutes each day. Additionally, there is a 49% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In May, the UV Index in Rio de Janeiro reaches a maximum of 7, indicating a level of High exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 25 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 | 6 | 7 | 7 | 6 | 4 | 2 | 1 | 1 | 0 | 0 |
| Exposure | Low | Moderate | High | Moderate | Low | ||||||||
| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min | ||||||||