São Luis weather in September (Alentejo, Portugal)

What kind of weather does September bring to São Luis? See what weather conditions to anticipate this month with our guide.

Temperatures

Experience perfect weather in São Luis in September, characterized by high temperatures and low rainfall. September is known for being in the summer season. Expect the temperatures during the day to hover around 27°C. At night, they will likely drop to about 17°C.

Precipitation

São Luis in September usually receives low rainfall, averaging around 28 mm for the month. Based on our climate data of the past 30 years, about 4 days of rain are anticipated.

Average sunshine

The days are predominantly sunny, with an estimated total of around 270 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.

So this is a great month to visit if you prefer dry days with pleasant temperatures. April, May, June, July, August, September and October typically offer the most optimal weather. In contrast, January, February and December tend to have less optimal conditions.

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

 

São Luis, monthly averages in September

Min Temperature 17°C  

Max Temperature 27°C  

Chance of Rain 12%  

Precipitation 28 mm  

Rainy days 4 days  

Humidity 68% *  

Sunshine 270 hours *  

Percentage Sunshine *  

* Data from: Praia da Rocha, Portugal (62 KM, 38 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?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

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

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Interested in more climate information?

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

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.