Oeiras
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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.

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).

Oeiras Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Oeiras - and find the best time to visit.

Best Places in Portugal in December

Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in December →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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

Oeiras 3-Day Forecast

More climate data for Oeiras

Popular in December

Where to go in December - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.