What was the average dollar rate in August 2026?

The average dollar rate was R$ 5.14, with a low of R$ 5.07 and a high of R$ 5.21.

How much did the Iguaçu River flow at the Falls exceed the historical average?

The average flow was 3,029 m³/s, which represents 102% more than the typical flow of 1,500 m³/s.

How much more expensive is fueling in Argentina compared to Foz?

Super gasoline in Argentina costs R$ 7.62 / L, 19% more than regular gasoline in Foz, which costs R$ 6.43 / L.

Marco Three Border Bulletin: August 2026

In August 2026, the average flow of the Iguaçu River at the Falls was 3,029 m³/s, 102% above the historical average.

Dollar

In August 2026, the average exchange rate of the dollar was R$ 5.14, with a low of R$ 5.07 and a high of R$ 5.21, according to the daily series from Marco Três/AwesomeAPI.

Iguaçu River Flow at the Falls

The average flow measured at the Hotel Cataratas station was 3,029 m³/s, with a peak of 5,692 m³/s. The typical river flow (long-term average) is about 1,500 m³/s, meaning the month ran with the river 102% fuller than normal.

Border Aviation (July 2026)

In the last official month, the total arriving flights at the border was 1,272, distributed between 795 in Foz do Iguaçu, Brazil, and 477 in Puerto Iguazú, Argentina, carrying 72,531 passengers on the Argentine side, according to data from ANAC Brazil and ANAC Argentina.

Passengers at Foz Airport (June 2026)

Foz do Iguaçu Airport, Brazil, recorded 228,021 passengers, a 36.3% increase over the same month a year earlier, according to ANAC.

Fuel

In the most recent week, regular gasoline in Foz do Iguaçu, Brazil, cost R$ 6.43 per liter (ANP). In Argentina, premium gasoline was equivalent to R$ 7.62 per liter (official Argentine data converted using the PTAX/commercial rate), 19% more expensive than fueling in Brazil.

Itaipu (August 2026)

Itaipu's average daily generation was 218.3 GWh, according to ONS. Each GWh is equivalent to the daily consumption of roughly 200,000 households. This energy does not supply Foz do Iguaçu; the Brazilian side goes to the national interconnected system, mainly Southeast/South, while almost all of Paraguay's consumption is covered by Itaipu.

What this means for you:

Plan purchases in dollars considering the average of R$ 5.14, but watch the range between R$ 5.07 and R$ 5.21.
If you visit the Falls, expect a water volume far above normal, which can enhance the visual experience but also generate more mist on the trails.
For air travelers, there are more flight options in Foz do Iguaçu than in Puerto Iguazú; take advantage of the greater connection offering.
The rise in passengers at Foz airport indicates higher traffic; arrive early and consider shuttle services.
When fueling, expect to pay about R$ 6.43 / L in Brazil and up to R$ 7.62 / L in Argentina; calculate the extra cost if you plan to drive between the two countries.
Itaipu’s generation covers the daily consumption of about 200,000 homes; this underscores the plant’s importance for the region but does not change the local electricity bill in Foz.

Monthly bulletin generated from open data series of Marco Três (official sources: ANA, ANAC Brazil and Argentina, ANP, Argentine Energy Secretariat, Comex Stat/MDIC, ONS, AwesomeAPI). Reusable data with credit, open data.