turismo ·
The weather in Foz this week (09/17 to 09/23): rain on 4 days and low of 14°C
Marco Três newsroom · edited by Annie GrellmannEspañolPortuguês
Day-by-day forecast for visitors to the Falls, Itaipu and the border, updated throughout the week as the outlook changes
The week in Foz do Iguaçu ranges from 14°C (Thursday) to 30°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 |
|---|---|---|---|
| Thursday 09/17 | cloudy | 14–27°C | 0% |
| Friday 09/18 | cloudy | 16–27°C | 20% |
| Saturday 09/19 | storm | 19–24°C | 96% |
| Sunday 09/20 | storm | 20–30°C | 88% |
| Monday 09/21 | storm with hail | 21–28°C | 79% |
| Tuesday 09/22 | storm | 17–26°C | 78% |
| Wednesday 09/23 | clear sky | 14–27°C | 18% |
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 for each attraction is in Will it be full? and the live bridge queue is in Bridge queue.
Weekly updates
- 09/15: Tuesday (09/15) now has a high chance of rain (84%).
- 09/17: Friday 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.
Source and method
Numbers: Open-Meteo (hourly model for Foz do Iguaçu, CC BY 4.0). Official INMET bulletin collected on 2026-09-16 matches the scenario (see official block at /previsao). This article is generated and automatically reviewed 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: 9/17/2026. Found something inaccurate? We fix it fast. How we work.
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