Planning to come to Porto soon? Do consider end of June to do so and you won't regret it. Porto's St. John festivities are Porto's biggest event, only comparable to the editions of Red Bull air race where 600.000 people flocked to the event. Go and have at look at some pictures of this event: google "S Joao Porto" and select images. :)
Wikepedia describes it this way:
Festa de São João do Porto (Festival of St John of Porto in English) is a festival that happens every year during Midsummer, on the night of 23 June (St John's Eve), in the city of Porto, in the north of Portugal, thousands of people come to the city centre and more traditional neighborhoods to pay a tribute to Saint John the Baptist, in a party that mixes sacred and profane traditions.
The festivities have been held in the city for more than six centuries, yet it was during the 19th century that Saint John's day became impregnated in the city's culture and assumed the status of the city's most important festival. An interesting tradition among the people of Porto during the 'Festa de São João', with roots in pagan courtship rituals, is to hit each other either with garlic flowers or soft plastic hammers.
In June Protected content , a journalist from The Guardian commented that "Porto's Festa de São João is one of Europe's liveliest street festivals, yet it is relatively unknown outside the country".
In fact, the party starts early in the afternoon of 23 June and usually lasts until the morning of 24 June. The traditional attractions of the night include street concerts, popular dancing parties, jumping over flames, eating barbecued sardines, "Caldo verde" and meat, drinking wine and releasing illuminated flame-propelled balloons over Porto's summer sky.
At midnight, the party goers make a short break to look at the sky at Saint John's firework spectacle at Luiz I bridge near Ribeira. The show is increasingly sophisticated with the fireworks being associated with themes and multimedia shows. The party has sacred roots but is also mixed with pagan traditions, with the fireworks embodying the spirit of tribute to the Sun.
The firework are the climax of the event and mark the end of the official festivities. Yet, it is quite common for citizens of Porto to keep celebrating until 3 or 4 in the morning. Some take it further, staying up until the first hours in the morning. They walk from Porto's riverside core - Ribeira (for instance the parish of São Nicolau (Porto)- up to the seaside in Foz (parishes of Foz do Douro and Nevogilde (Porto)) or in the nearby suburb of Matosinhos where they wait for the sunrise near the sea, and sometimes, take a bath in the ocean.
Live & Enjoy Porto