turismo ·
Weather in Foz this week (09/18 to 09/24): rain 4 days, low 13°C
Marco Três newsroom · edited by Annie GrellmannPortuguêsEspañol
Day-by-day forecast for visitors to the Falls, Itaipu and the border, updated throughout the week as conditions change
The week in Foz do Iguaçu ranges from 13°C (Wednesday) to 31°C (Sunday). Rain is expected on Saturday, Sunday, Monday and Tuesday. See the day-by-day details below. This article is revised during the week whenever the forecast changes.
Day by day
| day | weather | min–max | rain |
|---|---|---|---|
| Friday 09/18 | drizzle | 16–27°C | 2% |
| Saturday 09/19 | storm | 18–23°C | 99% |
| Sunday 09/20 | storm with hail | 19–31°C | 100% |
| Monday 09/21 | rain showers | 20–28°C | 76% |
| Tuesday 09/22 | storm | 16–25°C | 90% |
| Wednesday 09/23 | cloudy | 13–24°C | 7% |
| Thursday 09/24 | clear sky | 13–29°C | 8% |
What this means for the visit
On rainy days, the Falls remain impressive (bring a light raincoat) and Itaipu is hardly affected, as most tours are covered. The likelihood of full capacity per attraction is shown in Will it be full? and the live bridge queue in Bridge queue.
Weekly updates
- 09/15: Tuesday (09/15) now has a high chance of rain (84%).
- 09/17: Friday's rain (09/18) was removed from the scenario (now 20%).
- 09/17: Monday (09/21): high temperature changed from 24°C to 28°C.
- 09/17: Tuesday (09/22): high temperature changed from 23°C to 26°C.
- 09/18: Wednesday (09/23): high temperature changed from 27°C to 24°C.
Source and method
Numbers: Open-Meteo (hourly model for Foz do Iguaçu, CC BY 4.0). Official INMET bulletin collected on 2026-09-17 matches the scenario (see official block at /previsao). This article is generated and automatically revised by Marco Três from the data, without speculation. When the forecast changes, the text changes and the alteration is recorded above. Full 14-day forecast at /previsao.
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Content verified by the newsroom based on an official source: Open-Meteo + INMET · análise Marco Três. Last checked: 9/18/2026. Found something inaccurate? We fix it fast. How we work.
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