Visa Information

A visa may be acquired online or in person at a Portuguese embassy or consulate.

For a complete list of countries whose citizens are required to obtain a Schengen visa, please check: https://vistos.mne.gov.pt/en/  

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Letters of invitation

An invitation letter is required to apply for a visa. Upon request, invitation letters will be provided to the authors and presenters of accepted papers, posters, keynotes, tutorials, and panels, and to IRSC 2026 attendees who have completed their registration and payment process.

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After the registration and payment are completed, an invitation letter may be requested. With this letter, participants will be able to obtain a visa for the period of the IRSC 2026.

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Lisboa airport 

Is Portugal’s busiest airport, serving as the main gateway to the country with connections to Europe, the Americas, Africa, and beyond. Located just 7 km from the city center, it offers modern facilities, shopping, dining, and efficient transport links, making it a key hub for travelers visiting Lisboa.

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For more information on getting to and from the airport, see more here

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Climate

The average maximum and minimum temperature in Lisboa are 21°C / 70°F (high) and 13°C / 55°F (low). Please take into consideration that Lisboa is located on a river, and it can the refore be some what windy in the city in the late afternoon or evening..

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Currency

Portugal is a member of the European Monetary System, and the previous currency Escudo was replaced by the Euro (€) on 1 January 2002.

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Electric Current

Portuguese standard is the European type 2 pin sockets with 220 volts AC at 50 cycles. The phase 380 volt current is normally available in meeting rooms and exhibition halls.

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Local Time

Mainland Portugal is 1 hour ahead of European Standard Time (C.E.T. + 1).

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Language

The official language in Portugal is Portuguese. Both English, Spanish and French are widely spoken.

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Smoking

The Portuguese law, in accordance with Regulations in force in the majority of European Countries and the USA, does not allow smoking in any public transportation or in any closed public areas (some restaurants, bars and discotecs may have a designated smoking area).

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TAX Free

Sales tax (VAT) is included in prices quoted. For non E.U. residents, tax free shopping schemes are available in many shops, which give substantial savings to visitors.