Foz do Iguaçu weather in May
May in Foz do Iguaçu: warm, rainy, with clean air — a great time to visit.
#4 of 12 months in Foz do Iguaçu · #372 of 604 destinations to visit in May · comfort 78/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Foz do Iguaçu climate normals — May
| Daytime high | 24°C / 75°F | 🌤 warm |
|---|---|---|
| Nighttime low | 16°C / 60°F | |
| Feels like (high) | 25°C / 77°F | |
| Rainfall | 149 mm / 5.9 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 15°C / 60°F | |
| Sunshine | 7.7 h/day | |
| Daylight | 10.9 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 24 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Foz do Iguaçu?
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Foz do Iguaçu in May — FAQ
- Is May a good time to visit Foz do Iguaçu?
- May in Foz do Iguaçu: warm, rainy, with clean air — a great time to visit. It ranks #4 of 12 months for Foz do Iguaçu on SeasonMap's comfort score (78/100).
- What is the weather like in Foz do Iguaçu in May?
- In May, Foz do Iguaçu averages a daily high of 23.7°C and a low of 15.7°C, with about 148.6 mm of rain over roughly 10 rainy days.
- What is the air quality in Foz do Iguaçu in May?
- Foz do Iguaçu has a mean US Air Quality Index of about 24 in May.