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 city with a rich history and culture, making it a great destination for American tourists looking to explore a unique European city in the summer months of August. 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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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