Niterói weather in September (Rio de Janeiro State, Brazil)

Planning a trip to Niterói in September? This guide provides all the details you need.

In Niterói the weather in September is generally perfect, characterized by high temperatures and moderate rainfall. Daytime temperatures hover around 28°C, while nights can cool down to about 19°C.

Niterói in September usually receives moderate rainfall, averaging around 85 mm for the month. Typically around 12 days of rainfall is expected.

The area experiences a moderate amount of sunshine, with approximately 144 hours of sunlight expected. This makes it neither too gloomy nor overly bright.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Niterói. May, June, July, August and September typically offer the best circumstances. While January tends to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Niterói climate page with graphs.

 

Niterói, monthly averages in September

Min Temperature 19°C  

Max Temperature 28°C  

Water Temperature 21°C *  

Chance of Rain 38%  

Precipitation 85 mm  

Rainy days 12 days  

Humidity 79% *  

Windspeed 11 km/h *  

Sunshine 144 hours *  

Percentage Sunshine *  

* Data from: Rio de Janeiro, Brazil (8 KM, 5 Miles).

Where to go in Brazil in September

Find out more about the weather in Brazil in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Niterói in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case. With a water temperature of around 21°C this is a great month to swim so bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Niterói.

Our site offers climate and forecast data for every country in the world. Are you going to Brazil? On this website you can find historical weather averages for many cities in Brazil. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.