São Sebastião do Caí Weather in August
What's the weather like in São Sebastião do Caí (Rio Grande do Sul) in August 2025?
The climate in São Sebastião do Caí during August can be summarized as mild and wet.
August is in the winter in São Sebastião do Caí and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around 20°C (68°F), whilst at night 11°C (52°F) is normal.
| Daytime temperature | 20.2°C 68.4°F |
|---|---|
| Nightly temperature | 11.2°C 52.2°F |
| Average temperature | 15.7°C 60.3°F |
| Daily sunshine | 5.2 hrs |
| Avg rainfall | 143 mm 5.6 ins |
| Rainy days | 16 days |
| Sea temperature | 17.1°C 62.8°F |
| Humidity | 79% |
| Windspeed | 8.3kph 5 mph |
On average August is the 2nd wettest month of the year in São Sebastião do Caí with around 143mm 5.6 inches of rain making it a wet 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 5.2 hours of sunshine per day.
August temperatures in São Sebastião do Caí
August rainfall
August 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 Sebastião do Caí in August 2025.
Other monthly averages
Best places to visit in August
São Sebastião do Caí weather stats
| Hottest month: | January | 29.4°C 84.9°F |
|---|---|---|
| Driest month: | May | 96mm 3.8ins |
| Sunniest month: | December | 8.2hrs |
| Coldest month: | June | 19°C 66.2°F |
| Wettest month: | September | 157mm 6.2ins |
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