Oeiras weather in September (Lisbon Region, Portugal)

What kind of temperatures can you expect in Oeiras during September? Curious if the timing is right for your trip? Our page offers an in-depth look at the monthly weather conditions.

Temperatures

Experience perfect weather in Oeiras during September, featuring high temperatures and moderate rainfall. During the day, temperatures can climb to about 23°C. At night, they may fall to a cooler 18°C.

Precipitation

Oeiras in September usually receives moderate rainfall, averaging around 31 mm for the month. Historically, the month has about 6 days of rain.

Average sunshine

The days are predominantly sunny, with an estimated total of around 278 hours of sunshine. These sun-filled days are perfect for spending time outside. Whether it's playing sports, visiting a park, or going for a bike ride.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Oeiras. May, June, July, August, September and October typically offer the best circumstances. While January, February, March and December tend to showcase less optimal conditions.

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

 

Oeiras, monthly averages in September

Min Temperature 18°C  

Max Temperature 23°C  

Chance of Rain 20%  

Precipitation 31 mm  

Rainy days 6 days  

Humidity 75% *  

Sunshine 278 hours *  

Percentage Sunshine 75% *  

* Data from: Cascais, Portugal (9 KM, 5 Miles).

Where to go in Portugal in September

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

Weather conditions Weather

Temperatures

Precipitation

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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 this month?

For visitors traveling to Oeiras, 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.

What To Do

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

Swimming

10/10

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Oeiras.

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 travel conditions. Find out where to go with our weather planner.