December weather forecast and climate
Barcelona, Spain

The artistic Park Gull fronted by Gaudi, the architect, in Barcelona, Spain, on a beautiful summer day
The artistic Park Gull fronted by Gaudi, the architect, in Barcelona, Spain, on a beautiful summer day
The first month of winter, December is characterized by a further drop in temperatures to read between 5°C (41°F) and 14°C (57.2°F). The sun remains up for four hours on most days, making it a mildly cold month, but tolerable considering snowfall is rare.
The sea temperature drops to a cold 16°C (60.8°F), making it an inadequate time for sea activities.
Rain falls for an average of five days and collects low precipitation of 35.6mm (1.4") most days, making it relatively dry at a relative humidity of 56%.

What is the temperature in December in Barcelona?

The average high-temperature, in December, in Barcelona, Spain, is 15.1°C (59.2°F), while the average low-temperature is 9.5°C (49.1°F).

How many days does it rain in December in Barcelona?

In Barcelona, during December, the rain falls for 7 days and regularly aggregates up to 46.8mm (1.8") of precipitation.

What is the sea water temperature in December in Barcelona?

In December, in Barcelona, the average sea temperature is 15.5°C (59.9°F). Swimming in 15.5°C (59.9°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
Average temperature in December - Barcelona, Spain
  • Average high temperature in December: 15.1°C

The warmest month (with the highest average high temperature) is August (29°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in December: 9.5°C

The month with the highest average low temperature is August (23.1°C).
The coldest month (with the lowest average low temperature) is January (8.8°C).

Average rainfall in December - Barcelona, Spain
  • Average rainfall in December: 46.8mm

The wettest month (with the highest rainfall) is October (96.5mm).
The driest month (with the lowest rainfall) is July (25.1mm).

Average rainfall days in December - Barcelona, Spain
  • Average rainfall days in December: 7 days

Months with the highest number of rainy days are September and October (8 days).
The month with the lowest number of rainy days is July (3.1 days).

Average sea temperature in December - Barcelona, Spain
  • Average sea temperature in December: 15.5°C

The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is February (13.1°C).

Average daylight in December / Average sunshine in December - Barcelona, Spain
  • Average daylight in December: 9.2h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in December: 4.4h

The month with most sunshine is June (Average sunshine: 9.6h).
The month with least sunshine is December (Average sunshine: 4.4h).

Average UV index in December - Barcelona, Spain
  • Average UV index in December: 1

Months with the highest UV index are June and July (UV index 9).
The month with the lowest UV index is December (UV index 1).

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