Iguazú · AutumnMonth summary
Iguazú weather in September
✅ Good
🌡️ Temperature min / max
64°F – 82°F
🌧 Rainy days
28% of days
☀️ Sunshine
11.0h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
8.4/10
📅 📅 Best month
September (8.4/10)
Quick decision
Should you visit Iguazú 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: Iguazú in September: 82°F and 11.0h of sunshine. Decent, but not the peak.
By trip type
Iguazú in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ✅ Good
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
Autumn in Iguazú is often underrated: 28°F, golden light and declining crowds. An interesting window. Expect rain on 28% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if September (8.4/10) remains theoretically better.
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Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 73°F | 90°F | 54% | 0.3in | 12.3h | 7.2/10 |
| 🌤️ February | 73°F | 90°F | 47% | 0.2in | 12.1h | 7.3/10 |
| 🌤️ March | 72°F | 88°F | 42% | 0.2in | 11.5h | 7.5/10 |
| 🌤️ April | 68°F | 82°F | 30% | 0.2in | 10.9h | 8.3/10 |
| 🌤️ May | 63°F | 77°F | 35% | 0.2in | 9.7h | 7.7/10 |
| 🌤️ June | 59°F | 73°F | 31% | 0.2in | 9.9h | 7.6/10 |
| 🌤️ July | 59°F | 75°F | 19% | 0.1in | 10.2h | 8.1/10 |
| ☀️ August | 59°F | 79°F | 23% | 0.1in | 10.7h | 8.3/10 |
| 🌤️ September | 64°F | 82°F | 28% | 0.1in | 11.0h | 8.4/10 |
| 🌤️ October | 66°F | 82°F | 46% | 0.3in | 11.2h | 7.8/10 |
| 🌤️ November | 70°F | 88°F | 36% | 0.2in | 12.8h | 7.7/10 |
| 🌤️ December | 72°F | 90°F | 48% | 0.2in | 13.0h | 7.4/10 |
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, Iguazú averages 82°F, 28% rainy days and 11.0h 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°F
- 🌧 Rainy days : +0%
- ☀️ Sunshine : +0.0h/day
FAQ
FAQ — Iguazú in September
Is September a good time to visit Iguazú?
September is an excellent time to visit Iguazú (score 8.4/10). With 82°F, 11.0h of sunshine and 28% rain, conditions are very favourable.
What to do in Iguazú in September?
With 82°F and 11.0h of sunshine, all outdoor activities are possible: hiking, sightseeing and terraces.
Accommodation
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Activities & tours
Activities and tours in Iguazú
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