Click on a day for an hourly weather forecast
The temperatures in Iguacu in September are comfortable with low of 13°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Iguacu during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Iguacu in September 2025.
If you’re planning to visit Iguacu in the near future, we highly recommend that you review the 14 day weather forecast for Iguacu before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 27° / 17° | 18 | 13 | 0 | 303 mm | Good | Iguacu in January |
| February | 27° / 17° | 16 | 12 | 0 | 319 mm | Good | Iguacu in February |
| March | 26° / 16° | 13 | 18 | 0 | 217 mm | Good | Iguacu in March |
| April | 25° / 14° | 7 | 23 | 0 | 138 mm | Good | Iguacu in April |
| May | 22° / 12° | 7 | 24 | 0 | 209 mm | Ok | Iguacu in May |
| June | 20° / 10° | 7 | 23 | 0 | 223 mm | Ok | Iguacu in June |
| July | 20° / 10° | 6 | 25 | 0 | 162 mm | Good | Iguacu in July |
| August | 23° / 11° | 5 | 26 | 0 | 143 mm | Perfect | Iguacu in August |
| September | 26° / 13° | 6 | 24 | 0 | 168 mm | Perfect | Iguacu in September |
| October | 26° / 14° | 12 | 19 | 0 | 265 mm | Good | Iguacu in October |
| November | 27° / 15° | 13 | 17 | 0 | 226 mm | Good | Iguacu in November |
| December | 27° / 17° | 17 | 14 | 0 | 309 mm | Good | Iguacu in December |