See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:35
Sunrise
18:10
Sunset
Moon
Waning Crescent
04:06
Moonrise
14:36
Moonset
Daily Forecast
Today
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Air Quality Data Available
Upgrade to access real-time air quality data for São Sebastião do Caí.
UV Index
Humidity
Weather in São Sebastião do Caí today, September 07, 2026
São Sebastião do Caí stays under cloudy skies on September 07, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open.
The day peaks near 15°C and cools toward 4°C. Moisture in the air spans 45%-89%, with the highest values around 23:00. Airflow remains manageable, reaching about 3.1 km/h around 15:00.
The afternoon keeps an overcast feel, as cloud reaches about 69% around 14:00. Outdoor plans may still want a flexible backup. Visibility stays near 16.1 km. The sun rises at 06:35 and sets at 18:10, for a total of 11 hours 35 minutes of sunlight today.
Taken together, overcast skies in São Sebastião do Caí on September 07, 2026 favour indoor or covered options, with temperatures near 15°C.
Frequently asked questions about weather in São Sebastião do Caí
How warm does it get in São Sebastião do Caí?
The warmest month in São Sebastião do Caí is June, with average high temperatures of 17°C. The average temperature during this period is around 16°C.
How cold does it get in São Sebastião do Caí?
The coldest month in São Sebastião do Caí is September, with average low temperatures of 5°C. The average temperature during this period is around 10°C.
What is the wettest time of year in São Sebastião do Caí?
The wettest month in São Sebastião do Caí is July, with an average of 33mm of precipitation.
What is the driest time of year in São Sebastião do Caí?
The driest month in São Sebastião do Caí is September, with an average of 2mm of precipitation.
Explore more weather forecasts
- Montenegro, Rio Grande do Sul
- São Paulo, São Paulo
- Portão, Rio Grande do Sul
- Rio de Janeiro, Rio de Janeiro
- Estância Velha, Rio Grande do Sul
- Belo Horizonte, Minas Gerais
- Ivoti, Rio Grande do Sul
- Salvador, Bahia
- Novo Hamburgo, Rio Grande do Sul
- Fortaleza, Ceará
- São Leopoldo, Rio Grande do Sul
- Manaus, Amazonas
- Sapucaia do Sul, Rio Grande do Sul
- Brasília, Federal District
- Nova Petrópolis, Rio Grande do Sul
- Curitiba, Paraná
