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BrazilThe weather in September in Niterói
It's warm in September in Niterói with an average temperature of 28°C. Temperatures this month range from a low of 26°C to a high of 31°C. At night, you can expect temperatures between 20°C and 22°C.
Looking for great weather? September is a good time to be in Niterói. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Niterói, Brazil. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 38°C in 2023, Niterói reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 18°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of 15°C to a highest value of 25°C.
Rainfall amount
In September, there is an average of 36 mm of precipitation, spread over 7 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in September for Niterói
Click on any day in September to get detailed info about the usual weather on that day in Niterói. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Niterói | New York | |
|---|---|---|
| Average temperature | 28°C | 27°C |
| Max. temperature | 31°C | 31°C |
| Min. temperature | 20°C | -5°C |
| Total precipitation | 36 mm | 57 mm |
| Rainy days | 7 days | 9 days |
Start of September
The month of September starts in Niterói with hot temps, averaging around 28°C during the day and nights around 21°C.
Mid September
By mid-September, daytime temps rise to around 29°C, with nights around 22°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Niterói is around 28°C, while nighttime temps are about 21°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
Find affordable trips to Niterói
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Niterói for all months and discover the best travel time
Curious about the weather in other parts of Brazil? Check out the climate and weather for spots like Rio de Janeiro, Salvador, Pipa, or explore other destinations in Brazil.
Temperature charts
These charts show the average temperatures in September in Niterói, Brazil. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Niterói
Temperature in September in Niterói over the years
Precipitation charts
These charts show the average amount of precipitation in September in Niterói, Brazil. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Niterói
Total precipitation in September in Niterói over the years
Daily UV index in September in Niterói
This chart shows the average daily UV index in September in Niterói, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Niterói
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Average weather in Niterói by month
Click on a month below to see detailed weather info for Niterói. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.