São João da Barra Weather in May
What's the weather like in São João da Barra (Rio de Janeiro) in May 2025?
The climate in São João da Barra during May can be summarized as warm, humid and reasonably dry.
May is in the fall / autumn in São João da Barra and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 18°C (64°F) is normal.
| Daytime temperature | 27.3°C 81.1°F |
|---|---|
| Nightly temperature | 17.8°C 64°F |
| Average temperature | 22.5°C 72.5°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 57 mm 2.2 ins |
| Rainy days | 13 days |
| Sea temperature | 25.2°C 77.4°F |
| Humidity | 82% |
| Windspeed | 4.7kph 3 mph |
On average May is the 4th driest month of the year in São João da Barra with around 57mm 2.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
May temperatures in São João da Barra
May rainfall
May hourly sunshine
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 João da Barra in May 2025.
Other monthly averages
São João da Barra weather stats
| Hottest month: | February | 30.3°C 86.5°F |
|---|---|---|
| Driest month: | July | 26mm 1ins |
| Sunniest month: | June | 7.2hrs |
| Coldest month: | July | 25.4°C 77.7°F |
| Wettest month: | November | 151mm 5.9ins |
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