Niterói Weather & Climate: Best Time to Visit
Niterói, Rio de Janeiro State, Brazil, has a stable climate with little temperature variation across the year. Average daytime temperatures hover around 29°C (84°F), peaking in February at 32°C (90°F) and dipping in July to 26°C (79°F).
The city receives considerable rainfall, with around 1422 mm (56 in) annually. January is the wettest month. It has a distinct rainy season from November to January. The sunniest month is January, with 7.1 hours of sunshine per day on average.
Monthly Temperature in Niterói
With minimal seasonal shifts, Niterói experiences a constant climate year-round. Typically, average maximum daytime temperatures range from a very warm 32°C (90°F) in February to a comfortable 26°C (79°F) in the coolest month, July.
Nights vary from 24°C (75°F) in February to around 18°C (64°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Niterói
Niterói has a notably wet climate with abundant precipitation, recording 1422 mm (56 in) of rainfall per year. The climate in Niterói shows significant variation throughout the year. Expect heavy rainfall in January, the wettest month, with an average of 205 mm (8.1 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 Niterói Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Niterói
Niterói 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
Water Temperature in Niterói
The mean water temperature over the year ranges from 21°C (70°F) in August to 26°C (79°F) in February.
Water temperature over the year
Humidity in Niterói by Month
The relative humidity is high throughout the year in Niterói.
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
Wind Speed in Niterói
The mean wind speed varies between 2 m/s (4 knots) and 4 m/s (8 knots) throughout the year. It is lowest in April, May, June and July and highest during November. What does this mean?
The mean monthly wind speed over the year (meters per second)
Niterói 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Niterói
With its warm weather, Niterói experiences temperatures from 26°C (79°F) to 32°C (90°F) throughout the year. June, July and August offers the driest weather, which makes it a good time to visit.It's smart to plan your activities during the cooler morning hours or take advantage of the refreshing evenings.
Note that January, February, March, November and December make up the rainy season, with heavier precipitation expected. Wondering where to travel based on your weather preferences? Our recommendation tool helps you find destinations with your ideal climate conditions. Use our weather planner to find your perfect destination.
