Cascais weather in September (Lisbon Region, Portugal)

What's the typical weather in Cascais for September? Our page offers a comprehensive look at the weather you can expect this month.

Temperatures

The weather in Cascais is usually perfect in September, featuring pleasant temperatures and moderate rainfall. Expect daytime highs to reach approximately 22°C, with nighttime lows dipping to around 18°C.

Precipitation

Cascais in September usually receives moderate rainfall, averaging around 31 mm for the month. Rain is expected on roughly 6 days.

Average sunshine

Enjoy a sunny month with about 278 hours of sunshine, providing a cheerful and lively atmosphere.

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

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

 

Cascais, monthly averages in September

Min Temperature 18°C  

Max Temperature 22°C  

Chance of Rain 20%  

Precipitation 31 mm  

Rainy days 6 days  

Humidity 75%  

Sunshine 278 hours  

Percentage Sunshine 75%  

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 Cascais, 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.

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 Cascais.

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.