The climate in Rio de Janeiro during October can be summarized as warm, humid and wet.
October is in the spring in Rio de Janeiro and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a muggy 26°C (78°F), whilst at night 18°C (64°F) is normal.
|Daytime temperature||25.7°C 78.2°F|
|Nightly temperature||18°C 64.3°F|
|Average temperature||21.8°C 71.2°F|
|Daily sunshine||5.1 hrs|
|Avg rainfall||129 mm 5.1 ins|
|Rainy days||18 days|
|Sea temperature||22.5°C 72.5°F|
|Windspeed||9.4kph 6 mph|
On average October is the 6th driest month of the year in Rio de Janeiro with around 129mm 5.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.1 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Rio de Janeiro in October 2021.
|Hottest month:||February||29.9°C 85.8°F|
|Driest month:||July||66mm 2.6ins|
|Coldest month:||July||24.2°C 75.6°F|
|Wettest month:||December||207mm 8.1ins|