Foz do Iguaçu weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: April – September
What is the weather like in Foz do Iguaçu in September?
In September, Foz do Iguaçu is warm: daytime highs average 27 °C, and nights cool down to about 17 °C. Expect around 4 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 140 mm in total. On about 8 days the thermometer climbs to 30 °C or more. All in all, September is a good month for a holiday in Foz do Iguaçu.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 82 | 72 | 58 |
| Day | 24° | 27° | 28° |
| Night | 15° | 17° | 19° |
| Sun | 6 h | 4 h | 5 h |
| Rain days | 7 | 10 | 13 |
More details for September
- Daylight
- 11 h 55 min06:36 – 18:31
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 8 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 46 %on averageAll months
- Hot days
- 8 days30 °C or moreAll months
- Time zone
- UTC−3America/Sao_Paulo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %23 %
- Few rainy daysweight 30 %59 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Rain jacket or umbrella
Foz do Iguaçu in September: quick answers
Is Foz do Iguaçu hot in September?
Warm rather than hot: in September, daytime highs in Foz do Iguaçu average 27 °C and nights cool to about 17 °C. On about 8 days the thermometer climbs to 30 °C or more.
Does it rain much in Foz do Iguaçu in September?
Rain is frequent, with about 10 rainy days and 140 mm in total.
Foz do Iguaçu month by month
The whole year in Foz do IguaçuAll destinations: BrazilWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences