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
05:55
Sunrise
17:53
Sunset
Moon
Waning Crescent
02:40
Moonrise
14:59
Moonset
Daily Forecast
Today
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Air Quality Data Available
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UV Index
Humidity
Weather in São Luís today, September 07, 2026
São Luís looks damp on September 07, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly.
The day peaks near 31°C and cools toward 26°C. Moisture in the air spans 59%–81%, with the highest values around 21:00. Airflow remains manageable, reaching about 5.7 km/h around 15:00.
The second half of the day still looks unsettled, with rain probability around 36% by 13:00. Dense cloud near 48% at 12:00 keeps the feel grey. Horizontal visibility holds close to 16.1 km. Expect sunrise at 05:55, sunset at 17:53, and 11 hours 58 minutes of sunlight today overall.
Taken together, São Luís looks wet enough on September 07, 2026 that flexible outdoor plans work best, with temperatures peaking near 31°C.
Frequently asked questions about weather in São Luís
How warm does it get in São Luís?
The warmest month in São Luís is October, with average high temperatures of -14°C. The average temperature during this period is around -17°C.
How cold does it get in São Luís?
The coldest month in São Luís is July, with average low temperatures of -43°C. The average temperature during this period is around -42°C.
What is the wettest time of year in São Luís?
The wettest month in São Luís is May, with an average of 33mm of precipitation.
What is the driest time of year in São Luís?
The driest month in São Luís is July, with an average of 2mm of precipitation.
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