Porto weather

Our guide to the weather in Porto during August

26

Average high

6

UV Index

21mm

Monthly rainfall

17

Sea temperature

Porto is a vibrant and picturesque coastal city with a rich cultural heritage, perfect for exploring in the summer months; visitors should be prepared for hot weather and plan to take advantage of the many attractions, such as the Ribeira district and the Douro Valley. We've looked at the most up-to-date weather data for Porto, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Porto weather in August.

How warm is it in Porto during August?

August is typically the hottest month in Porto. The temperature hits about 26℃ during the day, falling away to a balmy 17℃ at night.The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Porto during August?

On average, there will be 2 rainy days during the month, amounting to 21.0mm in total. That's much drier than we see in England during August, and therefore not something to be concerned about. You're not likely to see a thunderstorm during your trip.

Is it windy in Porto during August?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in August. With moderate humidity and mild air temperatures, the breeze will have a slight cooling effect.

How warm is the sea in Porto during August?

The water around Porto is around 17℃ during August. It will feel a little on the cool when first entering, but you'll warm up quickly. Most kids will have no problem with this temperature, but those who feel the cold are unlikely to want to swim.

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Porto Blog posts

From the Ireland's most popular travel bloggers

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20 city break destinations for 2022

28th March 2022 by The Travel Expert

I’m a big fan of city breaks. I love how much you can discover in a new city such a short space of time. However, if you’re not one for pounding the pavements and covering an entire city on foot, settling down with a coffee and people watching in a town square can be just as enjoyable. We are fortunate to have many of Europe’s top city break destinations available from a variety of Irish airports this year. I have picked my top 20 to inspire your next break away. ...

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Porto city guide

12th March 2018 by The Daily S'elf

Over the last couple of years there’s been a massive increase in interest for Irish tourists travelling to Portugal. Sure, it’s always been popular, but it suddenly seemed like every second person on Instagram was posting pictures of beautiful tiles in Porto and delicious meals in Lisbon rather than package holidays to the Algarve. Keen to find out for myself what all the fuss is about, when I was approached by SuperValu to collaborate on some content surrounding their Real Rewards...

Weather in Porto

Our month-by-month guide to the weather and climate in Porto

13.5

Porto weather in

January
14.3

Porto weather in

February
16.3

Porto weather in

March
17.8

Porto weather in

April
20.8

Porto weather in

May
22.7

Porto weather in

June
25.2

Porto weather in

July
25.8

Porto weather in

August
24.8

Porto weather in

September
21.6

Porto weather in

October
16.2

Porto weather in

November
14.5

Porto weather in

December