Porto

Douro Valley Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in the Douro Valley, Portugal in August.

🔎
Porto Vila Nova de Gaia Lamego Peso da Régua

Planning a trip to the Douro Valley, Portugal this August? Here's what you need to know about the weather:

What to Expect in the Douro Valley in August

The Douro Valley, Portugal is a region in Portugal. August in the Douro Valley generally has warm temperatures, with low precipitation. It's the height of summer.

Temperatures

The average maximum temperatures are warm and range from 25°C (77°F) in Porto to 29°C (84°F) in Pinhão. Nighttime temperatures generally drop to 15°C (59°F) in Pinhão and 18°C (64°F) in Porto. On average, August is the month with the highest temperature of the year in the Douro Valley, Portugal.

For a closer look at conditions across the Douro Valley, Portugal, refer to the map below.

Precipitation

In August, precipitation varies across different areas. From low rainfall in Pinhão with an average of 20 mm (0.8 in) to low rainfall in Vila Nova de Gaia with 29 mm (1.1 in).

Average sunshine

Many locations offer abundant sunshine during this month. For instance, Porto enjoys approximately 295 hours of sunlight, ideal for those seeking sunny weather.

Explore the Douro Valley by month

Pick a month to see the average temperature, rainfall and sunshine in the Douro Valley — and find the best time to visit. (based on Porto)

January14°C (57°F) February15°C (59°F) March17°C (63°F) April18°C (64°F) May20°C (68°F) This monthJune23°C (73°F) July25°C (77°F) August25°C (77°F) September24°C (75°F) October21°C (70°F) November17°C (63°F) December15°C (59°F)
Best Time to Visit the Douro Valley →

Best Places to Visit in the Douro Valley in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across the Douro Valley.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in the Douro Valley

What is the weather like in August for some of the most popular destinations in the Douro Valley, Portugal?

Temperature range in the Douro Valley (August)

Precipitation variation in the Douro Valley (August)

Porto

In August Porto generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 18°C (64°F) and low monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
25°C (77°F)
25°C (77°F)
24°C (75°F)
Min temperature
18°C (64°F)
18°C (64°F)
17°C (63°F)
Monthly sun hours
307 hours
295 hours
224 hours
Monthly rainfall
22 mm (0.9 in)
27 mm (1.1 in)
62 mm (2.4 in)
Monthly rainy days
6 days
6 days
9 days
Weather conditions
perfect
perfect
perfect
Climate in Porto →

Vila Nova de Gaia

In August Vila Nova de Gaia generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 18°C (64°F) and low monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
25°C (77°F)
26°C (79°F)
24°C (75°F)
Min temperature
17°C (63°F)
18°C (64°F)
16°C (61°F)
Monthly sun hours
307 hours
295 hours
224 hours
Monthly rainfall
23 mm (0.9 in)
29 mm (1.1 in)
66 mm (2.6 in)
Monthly rainy days
6 days
6 days
9 days
Weather conditions
perfect
perfect
perfect
Climate in Vila Nova de Gaia →

Lamego

In August Lamego generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 15°C (59°F) and low monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
28°C (82°F)
28°C (82°F)
25°C (77°F)
Min temperature
15°C (59°F)
15°C (59°F)
13°C (55°F)
Monthly sun hours
307 hours
295 hours
224 hours
Monthly rainfall
23 mm (0.9 in)
26 mm (1 in)
60 mm (2.4 in)
Monthly rainy days
7 days
6 days
9 days
Weather conditions
perfect
perfect
perfect
Climate in Lamego →

Peso da Régua

In August Peso da Régua generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 15°C (59°F) and low monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
28°C (82°F)
28°C (82°F)
25°C (77°F)
Min temperature
15°C (59°F)
15°C (59°F)
13°C (55°F)
Monthly rainfall
22 mm (0.9 in)
25 mm (1 in)
58 mm (2.3 in)
Monthly rainy days
7 days
6 days
9 days
Weather conditions
perfect
perfect
perfect
Climate in Peso da Régua →

Pinhão

In August Pinhão generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 15°C (59°F) and low monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
29°C (84°F)
29°C (84°F)
25°C (77°F)
Min temperature
15°C (59°F)
15°C (59°F)
13°C (55°F)
Monthly rainfall
17 mm (0.7 in)
20 mm (0.8 in)
47 mm (1.9 in)
Monthly rainy days
7 days
6 days
9 days
Weather conditions
perfect
perfect
perfect
Climate in Pinhão →

Is your destination not in the list? Have a look at all destinations in the Douro Valley, in Portugal.

In our records: Portugal August extremes

Notable August records observed across cities in Portugal in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest August day in Portugal reached 45°C (113°F) in Évora on August 4, 2018.

Popular cities in August

Day & night temperatures, rainfall and average weather in the Douro Valley in August.

City Weather Day temp Night temp Rainfall
Porto 25°C (77°F) 18°C (64°F) 27 mm (1.1 in)
Vila Nova de Gaia 26°C (79°F) 18°C (64°F) 29 mm (1.1 in)
Lamego 28°C (82°F) 15°C (59°F) 26 mm (1 in)
Peso da Régua 28°C (82°F) 15°C (59°F) 25 mm (1 in)
Pinhão 29°C (84°F) 15°C (59°F) 20 mm (0.8 in)

The Douro Valley weather in August: frequently asked questions

What is the weather like in the Douro Valley, Portugal in August?

Expect perfect weather across the Douro Valley, Portugal in August. The popular destination of Porto averages 25°C (77°F) by day and 18°C (64°F) at night during this summer month.

What is the average temperature in the Douro Valley, Portugal in August?

Daytime temperatures in Porto peak at roughly 25°C (77°F) in August, dropping to about 18°C (64°F) overnight.

Does the Douro Valley, Portugal get a lot of rain in August?

Rain is generally moderate to light in the Douro Valley, Portugal during August, with Porto averaging close to 27 mm (1.1 in).

Is August a Good Time to Visit the Douro Valley, Portugal?

We believe that August is one of the best times to visit the Douro Valley, Portugal with overall perfect weather in Porto.

Generally speaking, May, June, July, August and September provide perfect weather in Porto. On the other hand, the months of January, February, March, November and December tend to have unpleasant weather conditions.

Interested in more climate information?

We have much more information about the climate in the Douro Valley.

Weather and climate has detailed information for every country in the world. Are you going to Portugal? Get detailed historical weather averages for many cities in Portugal.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.

7 of the most budget-friendly destinations in Europe

Discover Europe's top budget-friendly destinations including Budapest, Kotor, Krakow, and more, perfect for affordable and exciting travel.
Alentejo, where time stands still

The quiet region is known for its rolling green hills and it is a true hiking paradise. Architectural highlights can be found in the castles, ancient monasteries or when exploring the countless charming villages.
An eco-friendly guide to Lagos travel

Lagos, Portugal is a great place to visit while being careful about your environmental footprint. Here you find some tips about environmentally places to stay, where to eat and how to get around in the area.

What to do in Lisbon: our tips for an unforgettable city trip

Lisbon is a bustling city with many special places. In this article you find the best sights, good restaurants and nice places to stay in Lisbon.

Must visit in Portugal →