Niterói Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Niterói.
Climate overview of Niterói
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.
Niterói Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Niterói - and find the best time to visit.
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)
Best Time to Visit Niterói
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July, August and September
- Warmest weather: January, February and March
- Most sunshine: January, February and March
- Fewest rainy days: June, July and August
- Best for swimming: Any time of year. The sea stays pleasantly warm year-round.
- Seasonal pattern: A distinct rainy season from November to January
Frequently asked questions about the climate in Niterói
What is the best time to visit Niterói?
May, June, July, August and September typically offer the most optimal weather in Niterói. In contrast, January and December tend to have less optimal conditions. Niterói has a distinct rainy season from November to January.
What temperatures can I expect in Niterói?
Daytime highs range from 26°C (79°F) in July to 32°C (90°F) in February. Nighttime lows range from 18°C (64°F) to 24°C (75°F). Temperatures stay relatively stable year-round.
How much rain does Niterói get?
Annual rainfall is around 1422 mm (56 in). January is the wettest month with 205 mm (8.1 in), while August is the driest with 45 mm (1.8 in).
How sunny is Niterói?
Niterói receives around 2,183 hours of sunshine per year. January is the sunniest month with 212 hours, while September is the cloudiest with just 144 hours. Overall, Niterói enjoys abundant sunshine.
Niterói 3-Day Forecast
Niterói on the map
Niterói is highlighted - select any city to see its climate.
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