Rio de Janeiro weather in September (Rio de Janeiro State, Brazil)
Curious about the September weather in Rio de Janeiro? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.
In Rio de Janeiro, September is characterized by high temperatures and moderate rainfall. Daytime temperatures hover around 27°C, while nights can cool down to about 19°C.
Rio de Janeiro in September usually receives moderate rainfall, averaging around 85 mm for the month. Rain is expected on roughly 12 days.
The area experiences a moderate amount of sunshine, with approximately 144 hours of sunlight expected. This makes it neither too gloomy nor overly bright.
So this is a great month to visit if you prefer dry days with pleasant temperatures. May, June, July, August and September typically offer the most optimal weather. In contrast, January and December tend to have less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Rio de Janeiro climate page with graphs.
Rio de Janeiro, monthly averages in September
Min Temperature
19°C
Max Temperature
27°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
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.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in Rio de Janeiro 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.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Rio de Janeiro.
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.
