Best time to visit Porto, month by month: weather, rain, holidays, closures and the festivals of 2027

💡 The Short Version: For weather, go from June to September: highs of 22.7 to 24.8 °C, and 79.6 mm of rain across June, July and August together. May (20.3 °C, 8.9 wet days) and September (23.5 °C, 5.8 wet days) are the shoulder months. October to January is the wet season, with November the wettest at 165.9 mm. June holds Primavera Sound (10 to 13 June 2027) and São João (the night of 23 to 24 June 2027). Winter is wetter, and the Douro flooded parts of Ribeira and Miragaia on 6 February 2026. Or book a day for any weather: the Porto: Douro Valley with Boat Tour, Wine Tasting & Lunchad is from €55 for 7 to 10 hours.

Porto month by month

Averages are the Portuguese weather service IPMA’s normals for 1991 to 2020 at the Porto / Pedras Rubras station, at the airport, about 11 km north-north-west of São Bento station, so the river and the centre run a little different. A wet day has 1 mm or more of rain. The last column gives the sunrise and sunset on the 15th in 2027, computed for Porto and printed as about.

Rain on the Douro: the Porto bank looking across to Vila Nova de Gaia. Photo: londonexpat, Wikimedia Commons, CC BY-SA 2.0.

Porto is wetter than Lisbon from October to January: its November has 165.9 mm to Lisbon’s 134 mm, and its July high is 24.3 °C to Lisbon’s 28.2 °C. See the best time to visit Lisbon.

The weather in numbers

• The year: 1,146.9 mm of rain on 105.4 wet days, a mean high of 19.3 °C and a mean low of 11.2 °C.
• The wet season is October to January: October 148.9 mm, November 165.9 mm, December 153.3 mm, January 151.0 mm. June, July and August together get 79.6 mm.
• Heat: days of 30 °C or more average 13 a year, 3.5 of them in August, and days of 35 °C or more average 1.7. Nights that stay at 20 °C or more average 4.9 a year. The highest temperature at the station was 38.6 °C on 7 August 2016.
• Cold: frost averages 1.4 days a year, 0.9 of them in January. The lowest was -2.4 °C on 13 January 2003.
• The wettest day at the station was 92.9 mm on 20 October 2019.
• The clocks: Portugal keeps the UK’s time all year, one hour behind Spain.

Oranges ripening below an old city wall in Porto in winter. Photo: WASD42, Wikimedia Commons, CC BY 2.0.

What 2025 and 2026 looked like

IPMA described the winter of 2025/26 as warm and very rainy for mainland Portugal. On 6 February 2026 the Douro flooded parts of Miragaia and Ribeira in Porto and Afurada in Gaia. Summer 2026 was the third hottest in mainland Portugal since 1931, with heat waves from 9 to 24 June and from 29 June to 11 July, and a late-August rain event. The figures are IPMA’s for mainland Portugal, not Porto alone.

Public holidays and what they close

The Torre dos Clérigos is open 365 days, with shorter hours on 24 and 31 December and on 25 December and 1 January. The hours and the São João closures are in Christmas in Porto and São João in Porto.

Which month for what

• Walking the hills: May and September, when the highs are 20.3 and 23.5 °C and the rain is lighter than in the autumn. The Guindais funicular has been closed since 18 July 2026, so the climb out of Ribeira is on foot: see where to stay in Porto.
• The beach: July and August, the driest and warmest months. The sea end of the city is at Foz do Douro and Matosinhos: see Matosinhos seafood.
• The June festivals: Primavera Sound at the Parque da Cidade and São João, with its fireworks along the river. Book a bed early for both.
• The harvest: September and October in the Douro: see the Douro Valley day trip.
• Indoor days: November to February are wet. Plan museums, port cellars and cafés: see Porto’s museums and Porto’s port wine cellars.
• Christmas lights: in 2025 they went on at the end of November and stayed up until 6 January.

August

The main sights stay open. Many small family restaurants close for part of August, so ring ahead for a table: see where to eat in Porto.

For a plan once you have picked the dates, see Porto in 2 days; for the way in from the airport, Porto airport to the city; and for the bookings that sell out in any month, what to book before you go to Porto. The festivals have their own pages: São João, Christmas and New Year’s Eve.