Porto weather in September (Norte Region, Portugal)

How is the weather in Porto in September? Here's what the weather might have in store during this month.

In Porto the weather in September is generally perfect, with high temperatures and moderate rainfall. September falls within the summer season. Daytime temperatures hover around 24°C, while nights can cool down to about 17°C.

Porto in September usually receives moderate rainfall, averaging around 62 mm for the month. Typically around 9 days of rainfall is expected.

The days are predominantly sunny, with an estimated total of around 224 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.

If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Porto. May, June, July, August and September typically offer the most agreeable circumstances. On the other hand, January, February, March, November and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Porto climate page with graphs.

 

Porto, monthly averages in September

Min TemperatureMin Temperature 17°C  
Max TemperatureMax Temperature 24°C  
Water TemperatureWater Temperature 18°C  
Chance of RainChance of Rain 29%  
PrecipitationPrecipitation 62 mm  
Rainy daysRainy days 9 days  
HumidityHumidity 76%  
WindspeedWindspeed 14 km/h  
SunshineSunshine 224 hours  
Percentage SunshinePercentage Sunshine 64%  

Where to go in Portugal in September

Find out more about the weather in Portugal in September and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Porto in September?

For visitors traveling to Porto, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes. With a water temperature of around 18°C there is no need to bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
9/10
Cycling
10/10
Walking
10/10
Barbeque
8/10
Camping
8/10
Outdoor sports
10/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Porto.

Our site offers climate and forecast data for every country in the world. Are you going to Portugal? On this website you can find 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 climate conditions. Find out where to go with our weather planner.