Porto in December 2026: Christmas Lights on the Douro

It is a challenging month — you may want to consider another time of year. In December, Porto averages a high of 15°C (58°F) and a low of 9°C (48°F), with 188mm of rainfall across roughly 14 rainy days. São João festival on June 23-24 turns every alley into grilled sardine smoke and plastic hammer fights; the Douro regatta closes Ribeira for 48 hours.

The average high temperature in Porto during December is 15°C (58°F), with an average low of 9°C (48°F). These figures are averaged from 11 complete years of daily records (2015–2025, Open-Meteo Archive). January Atlantic storms flood Cais da Ribeira; Café Majestic on Santa Catarina fills with three-hour coffee refugees.

Porto averages approximately 14 rainy days in December, with a total monthly rainfall of about 188mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days. November-December drop 180mm; the Rua das Flores cobbles turn into shallow rivers and shopkeepers deploy sandbags.

For Porto in December, pack a merino base layer for evenings, a compact umbrella or waterproof jacket, comfortable walking shoes. These recommendations are based on 11 complete years of weather averages for this specific month. Grippy walking shoes with a soft sole — Porto's calçada portuguesa limestone gets glass-slick in drizzle and ER visits from tourist falls peak every December.

Tourist crowds in Porto during December are typically moderate. Consider this when planning accommodation — prices track crowd levels closely. Skip the port cellars everyone visits and drink verdejo at Prova on Rua Ferreira Borges. Bolhão Market renovation kept the same tripas vendors who've stood there since the 1950s. Tram 22 climbs from Batalha to Carmo past three azulejo churches nobody photographs. Real francesinha lives at Café Santiago on Passos Manuel, not the Ribeira tourist versions — the beer sauce ratio matters and locals argue about it seriously.