Cascais weather in December (Lisbon Region, Portugal)

Looking to travel to Cascais in December? Check out this comprehensive weather guide.

In December, Cascais generally has moderate temperatures and moderate rainfall. Anticipate daytime temperatures around 17°C, while night temperatures can drop to 13°C.

Cascais in December usually receives moderate rainfall, averaging around 91 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 14 days of the month will see rainfall.

The area enjoys a balanced 162 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Cascais. June, July, August, September and October generally stand out with the best circumstances. While January, February, March, April and December tend to showcase less optimal conditions.

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

 

Cascais, monthly averages in December

Min Temperature 13°C  

Max Temperature 17°C  

Chance of Rain 47%  

Precipitation 91 mm  

Rainy days 14 days  

Humidity 81%  

Sunshine 162 hours  

Percentage Sunshine 55%  

Where to go in Portugal in December

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

Weather conditions Weather

Temperatures

Precipitation

Map not visible? Whoops sorry! Please refresh the page.

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 Cascais in December?

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. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Swimming

5/10

Cycling

6/10

Walking

6/10

Barbeque

6/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

Weather and Climate 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 climate conditions. Find out where to go with our weather planner.