Sao Paulo Weather in September
Sao Paulo in September averages 26°C (79°F) during the day and 15°C (59°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Sao Paulo in September
Typically, about 13 days will experience rainfall, with an average of 102 mm (4 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Sao Paulo in September
In September, Sao Paulo gets high temperatures, with highs of 26°C (79°F). Nights cool to around 15°C (59°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 15°C (59°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Sao Paulo in September
The month experiences a moderate amount of sunlight, with 152 hours of sunshine. This provides a nice balance between sunshine and clouds.If you prefer dry days with pleasant temperatures, April, May, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Brazil, check out our Sao Paulo's climate page.
Sao Paulo Temperature in September
Min Temperature
15°C (59°F)
Max Temperature
26°C (79°F)
Chance of Rain
44%
Precipitation
102 mm (4 in)
Rainy days
13 days
Humidity
77%
Sunshine
152 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Sao Paulo typically stay consistent throughout September, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows around 15°C (59°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Sao Paulo in September
Browse day-by-day weather records for Sao Paulo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sao Paulo historical weather extremes in September
The extremes listed below come from historical weather data collected in Sao Paulo from 1976 through 2025.
- Sao Paulo recorded its highest September temperature of 35°C (95°F) on September 24, 2023.
- The coldest September day was on September 14, 1990, with a maximum of 11°C (52°F).
- Sao Paulo registered its coldest September night on September 16, 1990, with temperatures dropping to 6°C (43°F).
Best Places in Brazil in September
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Sao Paulo in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Sao Paulo in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Brazil, check out our Sao Paulo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Sao Paulo climate overview or explore weather in Brazil.
