Temperature in The Douro Valley in September

Daytime highs, nighttime lows and the warmest cities in the Douro Valley, Portugal this September.

The Douro Valley, Portugal, a region in Portugal, typically experiences warm weather in September, with maximum daytime temperatures around 24°C (75°F) and nighttime temperatures around 17°C (63°F) in Porto. September is part of the summer season

What is the temperature of the different cities in the Douro Valley, Portugal 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.

Select a Month

Check the conditions for any month of the year.

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

See also: the Douro Valley weather by month.

Best Places to Visit in the Douro Valley in September

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

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

See all September weather averages, cities and regions in the Douro Valley

The Douro Valley temperatures in September: frequently asked questions

How hot does it get in the Douro Valley, Portugal in September?

Expect daytime temperatures around 24°C (75°F) in Porto. That makes September a high month for the Douro Valley, Portugal.

How cold does it get at night in the Douro Valley, Portugal in September?

Average overnight lows in the Douro Valley, Portugal during September sit near 17°C (63°F) in Porto.

How much sun does the Douro Valley, Portugal get in September?

The weather is predominantly sunny, with an estimated total of around 224 hours of sunshine in Porto. This means many sunny days, which creates a cheerful atmosphere during this month.

What is the water temperature in September?

The water temperature averages approximately 18°C (64°F) in Porto this month, still a bit cool to swim, though some enjoy a refreshing dip.

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.

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