Oeiras Weather in December

December in Oeiras typically sees daytime highs of 16°C (61°F) and nighttime lows of 12°C (54°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Oeiras in December

Typically around 14 days of rainfall are expected, averaging 87 mm (3.4 in) for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Oeiras in December

December in Oeiras brings moderate temperatures, with highs of 16°C (61°F) and nights around 12°C (54°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Oeiras in December

The month experiences a moderate amount of sunlight, with 162 hours of sunshine. This provides a nice balance between sunshine and clouds.

December in Oeiras has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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For a detailed overview over the year and the best time to visit Portugal, check out our Oeiras's climate page.

Oeiras Temperature in December

Min Temperature 12°C (54°F)  

Max Temperature 16°C (61°F)  

Chance of Rain 47%  

Precipitation 87 mm (3.4 in)  

Rainy days 14 days  

Humidity 81% *  

Sunshine 162 hours *  

Percentage Sunshine 55% *  

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

What to Wear in Oeiras in December

For Oeiras in December, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Oeiras in December

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

Swimming

5/10

Cycling

6/10

Walking

6/10

Barbeque

6/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Portugal, check out our Oeiras's climate page.

More climate data for Oeiras

Temperature Rainfall Sunshine Humidity

See the full Oeiras climate overview or explore weather in Portugal.