Seixal weather in December (Lisbon Region, Portugal)

What can you expect from the weather in Seixal during December? This guide provides all the details you need.

In December, Seixal typically experiences moderate temperatures and moderate rainfall. December is a winter month. Daytime temperatures hover around 16°C, while nights can cool down to about 11°C.

Seixal in December usually receives moderate rainfall, averaging around 81 mm for the month. Rain is expected on roughly 14 days.

The city usually sees around 141 hours of sunlight, indicating a moderately sunny period.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Seixal. 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 Seixal climate page with graphs.

 

Seixal, monthly averages in December

Min Temperature 11°C  

Max Temperature 16°C  

Chance of Rain 46%  

Precipitation 81 mm  

Rainy days 14 days  

Sunshine 141 hours *  

Percentage Sunshine 57% *  

* Data from: Lisbon, Portugal (8 KM, 5 Miles).

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

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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 Seixal in December?

For visitors traveling to Seixal, 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

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

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

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.