December weather forecast and climate
Lisbon, Portugal

The beautiful hillside city of Lisbon in Portugal, with a high, far view of the Sao Jorge Castle, seen on a sunny day
The beautiful hillside city of Lisbon in Portugal, with a high, far view of the Sao Jorge Castle, seen on a sunny day
Winter in Lisbon kicks in December; temperatures drop to 12.2°C (54°F), and most days are overcast and rainy. Appropriate use of this time would be to explore the beauty and tranquillity that Lisbon's indoor tourist attraction sites have to offer.
The winter month is a great period to go and uncover the awe-inspiring mummies and gothic relics in the Carmo Archaeological Museum. Art lovers could also visit the National Museum of Contemporary Art and experience the beauty of unique, priceless sculptures and paintings.

What is the temperature in December in Lisbon?

In December, in Lisbon, Portugal, the average high-temperature is 15.3°C (59.5°F), and the average low-temperature is 9.4°C (48.9°F).

How much does it rain in Lisbon in December?

In December, in Lisbon, Portugal, the rain falls for 14 days. Throughout December, 126.7mm (5") of precipitation is accumulated.
Average temperature in December - Lisbon, Portugal
  • Average high temperature in December: 15.3°C

The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in December: 9.4°C

The month with the highest average low temperature is August (18.6°C).
The coldest month (with the lowest average low temperature) is January (8.3°C).

Average rainfall in December - Lisbon, Portugal
  • Average rainfall in December: 126.7mm

The wettest month (with the highest rainfall) is November (127.6mm).
The driest month (with the lowest rainfall) is July (4.2mm).

Average rainfall days in December - Lisbon, Portugal
  • Average rainfall days in December: 14 days

Months with the highest number of rainy days are January, February and December (14 days).
Months with the lowest number of rainy days are July and August (2 days).

Average sea temperature in December - Lisbon, Portugal
  • Average sea temperature in December: 16.6°C

The best month for swimming (with the highest average sea temperature) is September (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).

Average daylight in December / Average sunshine in December - Lisbon, Portugal
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 5h

Months with most sunshine are July and August (Average sunshine: 11h).
Months with least sunshine are January, February, November and December (Average sunshine: 5).

Average UV index in December - Lisbon, Portugal
  • Average UV index in December: 2

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 2).

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