Iguazú · SpringMonth summary
Iguazú weather in May
✅ Good
🌡️ Temperature min / max
17°C – 25°C
🌧 Rainy days
35% of days
☀️ Sunshine
9.7h per day on average
🌊 🌊 Season
Spring
⭐ ⭐ Weather score
7.7/10
📅 📅 Best month
September (8.4/10)
Quick decision
Should you visit Iguazú in May?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 25°C.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Iguazú in May: 25°C and 9.7h of sunshine. Decent, but not the peak.
By trip type
Iguazú in May by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ✅ Good
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in May
🎯 Peak season — book ahead for best rates. Accommodation prices at their highest Spring marks the start of the good season in Iguazú. Temperatures rise (25°C) and tourists have not yet arrived en masse. Expect rain on 35% 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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All months for Iguazú
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 23°C | 32°C | 54% | 6.7 | 12.3h | 7.2/10 |
| 🌤️ February | 23°C | 32°C | 47% | 5.1 | 12.1h | 7.3/10 |
| 🌤️ March | 22°C | 31°C | 42% | 5.1 | 11.5h | 7.5/10 |
| 🌤️ April | 20°C | 28°C | 30% | 4.4 | 10.9h | 8.3/10 |
| 🌤️ May | 17°C | 25°C | 35% | 5.7 | 9.7h | 7.7/10 |
| 🌤️ June | 15°C | 23°C | 31% | 4.3 | 9.9h | 7.6/10 |
| 🌤️ July | 15°C | 24°C | 19% | 2.1 | 10.2h | 8.1/10 |
| ☀️ August | 15°C | 26°C | 23% | 3.0 | 10.7h | 8.3/10 |
| 🌤️ September | 18°C | 28°C | 28% | 3.4 | 11.0h | 8.4/10 |
| 🌤️ October | 19°C | 28°C | 46% | 7.7 | 11.2h | 7.8/10 |
| 🌤️ November | 21°C | 31°C | 36% | 5.1 | 12.8h | 7.7/10 |
| 🌤️ December | 22°C | 32°C | 48% | 6.0 | 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 May, Iguazú averages 25°C, 35% rainy days and 9.7h of sunshine per day. Overall weather score: 7.7/10.
See methodology →
Comparison
May vs September (best month)
The best month is September (score 8.4/10). Difference:
- 🌡️ Max temperature : +3°C
- 🌧 Rainy days : -7%
- ☀️ Sunshine : +1.3h/day
FAQ
FAQ — Iguazú in May
Is May a good time to visit Iguazú?
May is an excellent time to visit Iguazú (score 7.7/10). With 25°C, 9.7h of sunshine and 35% rain, conditions are very favourable.
What to do in Iguazú in May?
With 25°C max and 9.7h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
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