May Weather in Niteroi

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%.

18°C (64°F)

Minimum temperature

23°C (74°F)

Average temperature

31°C (88°F)

Maximum temperature

81%

Humidity

Precipitation and Sunshine hours

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.

73 mm (2.9 inches)

Precipitation

10 rainy days

Rainy days

9 hours 5 minutes

Sunshine hours

49%

Chance of sun

UV Index

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.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  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

Compare Niteroi's Climate with Cities Worldwide