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September in Morro de São Paulo brings high temperatures, with daytime highs of 27°C (81°F) and nights around 22°C (72°F). Quite a bit of rainfall is expected, around 104 mm (4.1 in), so pack an umbrella.
Should you favor a climate that's both dry and comfortably warm, October and December typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Pick a month to see the average temperature, rainfall and sunshine in Morro de São Paulo - and find the best time to visit.
45-year average (1976-2025)
Based on our historical records, temperatures in Morro de São Paulo typically stay consistent throughout September, with daily highs averaging around 27°C (81°F). Nights are warm, with lows around 23°C (73°F).
Browse day-by-day weather records for Morro de São Paulo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The extremes listed below come from historical weather data collected in Morro de São Paulo from 2006 through 2026.
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 is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Morro de São Paulo climate overview or explore weather in Brazil.
Where to go in September - average daytime high across popular destinations.
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