São Paulo · AutumnMonth summary
São Paulo weather in September
✅ Good
🌡️ Temperature min / max
15°C – 26°C
🌧 Rainy days
23% of days
☀️ Sunshine
10.9h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
8.4/10
📅 📅 Best month
September (8.4/10)
Quick decision
Should you visit São Paulo in September?
✅ Good
✅ Yes if: you want good weather with lower prices than peak season.
❌ No if: you need guaranteed perfect weather — some mixed days are possible.
Our take: São Paulo in September: 26°C and 10.9h of sunshine. Decent, but not the peak.
By trip type
São Paulo in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
🎯 Peak season — book ahead for best rates. Accommodation prices at their highest Autumn in São Paulo is often underrated: 26°C, golden light and declining crowds. An interesting window. Rain risk remains low (23% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if September (8.4/10) remains theoretically better.
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All months for São Paulo
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 19°C | 27°C | 78% | 7.9 | 10.7h | 7.1/10 |
| ⛅ February | 18°C | 27°C | 67% | 5.7 | 10.9h | 7.3/10 |
| 🌤️ March | 18°C | 27°C | 59% | 4.4 | 10.7h | 7.4/10 |
| 🌤️ April | 16°C | 25°C | 35% | 2.2 | 10.4h | 7.9/10 |
| 🌤️ May | 14°C | 23°C | 23% | 1.4 | 9.4h | 7.9/10 |
| 🌤️ June | 13°C | 22°C | 23% | 1.5 | 9.5h | 7.8/10 |
| 🌤️ July | 12°C | 23°C | 8% | 0.8 | 10.1h | 8.3/10 |
| 🌤️ August | 13°C | 23°C | 19% | 1.5 | 10.0h | 8.0/10 |
| ☀️ September | 15°C | 26°C | 23% | 1.5 | 10.9h | 8.4/10 |
| 🌤️ October | 16°C | 25°C | 52% | 4.0 | 9.2h | 7.3/10 |
| 🌤️ November | 16°C | 25°C | 54% | 4.5 | 10.8h | 7.4/10 |
| ⛅ December | 18°C | 27°C | 66% | 5.0 | 11.0h | 7.3/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, São Paulo averages 26°C, 23% rainy days and 10.9h of sunshine per day. Overall weather score: 8.4/10.
See methodology →
Comparison
September vs September (best month)
The best month is September (score 8.4/10). Difference:
- 🌡️ Max temperature : +0°C
- 🌧 Rainy days : +0%
- ☀️ Sunshine : +0.0h/day
FAQ
FAQ — São Paulo in September
Is September a good time to visit São Paulo?
September is an excellent time to visit São Paulo (score 8.4/10). With 26°C, 10.9h of sunshine and 23% rain, conditions are very favourable.
What to do in São Paulo in September?
With 26°C and 10.9h of sunshine, all outdoor activities are possible: hiking, sightseeing and terraces.
Accommodation
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Activities & tours
Activities and tours in São Paulo
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