Temperature in The Douro Valley in September

The Douro Valley is a region in Portugal. September is generally a warm month with maximum daytime temperatures around 24°C and nighttime temperatures around 17°C in Porto. The month of September is in the summer season.

What is the temperature of the different cities in the Douro Valley in September?

Find the average daytime temperatures in September for the most popular destinations in the Douro Valley on the map below. Click on a destination dot for more detailed information.

Weather conditions Weather

Temperatures

Precipitation

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Legend

very warm

warm

pleasant

moderate

cold

very cold

Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

Select a Month of Interest

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Portugal, check out our Douro Valley's climate page.

How much sun does the Douro Valley get in September?

Porto enjoys approximately 224 hours of sunshine, offering a mostly sunny climate that adds a pleasant and vibrant feel to the month.

What is the water's temperature in September?

The water temperature averages approximately 18°C in Porto this month, so still a bit cool to swim but some enjoy a chilly dive.

Interested in more climate information?

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.