turismo ·
Weather in Foz this week (09/21 to 09/27): rain on 3 days and low of 11°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 11°C (Wednesday) to 31°C (Sunday). Rain is expected on Monday, Tuesday and Sunday. 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 |
|---|---|---|---|
| Monday 09/21 | thunderstorm with hail | 21–30°C | 92% |
| Tuesday 09/22 | drizzle | 15–23°C | 94% |
| Wednesday 09/23 | partly cloudy | 11–24°C | 4% |
| Thursday 09/24 | partly cloudy | 13–28°C | 2% |
| Friday 09/25 | few clouds | 17–29°C | 14% |
| Saturday 09/26 | clear sky | 19–30°C | 42% |
| Sunday 09/27 | clear sky | 21–31°C | 53% |
What this means for the tour
On rainy days, the Falls remain impressive (bring a light raincoat) and Itaipu is hardly affected, as most tours are covered. A low of 11°C calls for a real jacket, especially early in the morning and at night. The likelihood of full capacity for attractions is shown in Will it be full? and the live bridge queue in Bridge queue.
Source and method
Numbers: Open-Meteo (hourly model for Foz do Iguaçu, CC BY 4.0). Official INMET bulletin collected on 2026-09-19 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.
Still have questions? Ask the border
Marco Três's AI answers instantly, only from verified guides and live data, never made up.
Ask my own question →Read also
Live tools
Saiba de tudo antes de todo mundo
Câmbio, clima e o que importa nos três países, no seu e-mail, todo dia. Gratuito, sem spam.
✓ Marco Três fact-check
Content verified by the newsroom based on an official source: Open-Meteo + INMET · análise Marco Três. Last checked: 9/20/2026. Found something inaccurate? We fix it fast. How we work.
Spotted something wrong? Tell us.
AI-automated curation with editorial supervision, your correction or suggestion helps keep things right.