Last updated: March 2, 2024
The weather in Niteroi, Brazil, during May is characterized by an average temperature of 23°C (74°F). Highs can soar to 31°C (88°F), while lows may dip to 18°C (64°F). Typically, the humidity level in Niteroi throughout May hovers around 81%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Niteroi averages 73 mm (2.9 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
Sunshine hours
Chance of sun
In May, the UV Index in Niteroi 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 | ||||||||