Fuel prices in Portugal are set to rise in the coming week, according to a report from SIC Notícias. The outlet confirmed the increase on Friday, August 21, 2026, without specifying the exact amount or the precise date the new prices take effect.
The reported hike comes amid broader market pressures. Diário de Notícias attributes the upward movement to the ongoing crisis in the Strait of Hormuz, a key shipping lane for global oil. That outlet notes that diesel could climb above the €2-per-liter mark in Portugal as a result of the disruption.
The Automóvel Club de Portugal (ACP) has also published a fuel price outlook for the week of August 24–30, which aligns with the expectation of higher costs at the pump. The ACP’s figures are commonly used by Portuguese drivers to plan their refueling.
In response to the trend, the Portuguese government has decided to increase the discount on the ISP (Imposto sobre Produtos Petrolíferos), a fuel tax, for both diesel and gasoline, according to Jornal de Notícias. The move is intended to soften the impact of the price rise on consumers, though the exact size of the new discount has not been disclosed in the available reporting.
The combination of geopolitical tension in the Strait of Hormuz and the government’s tax adjustment means drivers should expect to pay more at the pump next week. The precise per-liter increase will depend on the final wholesale price adjustments, which typically are announced by fuel distributors in the days before the change takes effect.
What to watch next: the official price list from Portugal’s energy regulator, which will confirm the exact new rates for the week starting August 24.
