The climate in São Sebastião during December can be summarized as hot, humid and reasonably dry.
December is in the summer in São Sebastião and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 22°C (71°F) is normal.
|Daytime temperature||31.8°C 89.2°F|
|Nightly temperature||21.8°C 71.2°F|
|Average temperature||26.8°C 80.2°F|
|Daily sunshine||8.6 hrs|
|Avg rainfall||32 mm 1.3 ins|
|Rainy days||16 days|
|Sea temperature||27.3°C 81.1°F|
|Windspeed||10.8kph 7 mph|
On average December is the 4th driest month of the year in São Sebastião with around 32mm 1.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.6 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 São Sebastião in December 2022.
|Hottest month:||January||31.5°C 88.7°F|
|Driest month:||November||25mm 1ins|
|Coldest month:||July||25.8°C 78.4°F|
|Wettest month:||May||172mm 6.8ins|