Itaguaí Weather & Climate: Best Time to Visit

In Itaguaí temperatures are generally consistent throughout the year. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in February to a comfortable 25°C (77°F) in the coolest month, July.

Nights vary from 24°C (75°F) in February to around 17°C (63°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Itaguaí experiences significant rainfall throughout the year, averaging 1632 mm (64 in) of precipitation annually. The climate in Itaguaí shows significant variation throughout the year. Expect heavy rainfall in January, the wettest month, with an average of 259 mm (10 in) of precipitation over 20 rainy days.

In contrast, the driest month August offers drier and sunnier days, with around 45 mm (1.8 in) of rainfall over 9 rainy days. For more details, please visit our Itaguaí Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Itaguaí offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between January (7.1 hours daily) and September (4.8 hours daily) provides a bit of variety for visitors and residents.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Itaguaí.

The city experiences its highest humidity in March, reaching 80%. In July, the humidity drops to its lowest level at 77%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year