Foz do Iguacu weather by month
Foz do Iguacu runs from about 17°C in July to 28°C in February, with December the wettest month at 250 mm.
warmest month
February
28°C
coolest month
July
17°C
wettest month
December
250 mm
worst air month
November
10 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 27°C | 132 mm | 359 h | 9 |
| February | 28°C | 82 mm | 334 h | 10 |
| March | 27°C | 98 mm | 328 h | 10 |
| April | 25°C | 214 mm | 252 h | 9 |
| May | 20°C | 219 mm | 221 h | 8 |
| June | 21°C | 82 mm | 264 h | 9 |
| July | 17°C | 109 mm | 222 h | 9 |
| August | 19°C | 61 mm | 297 h | 7 |
| September | 23°C | 87 mm | 291 h | 8 |
| October | 25°C | 151 mm | 328 h | 9 |
| November | 26°C | 115 mm | 334 h | 10 |
| December | 25°C | 250 mm | 337 h | 10 |
About 3,567 hours of sun a year. Roughly 160 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-25. Full method, licences and the list of sources we rejected are on the methodology page.