December weather forecastBarcelona, Spain
December
Weather in December
Rounding off the year, weather in December in Barcelona is marked by mild winters with an average high of 13.4°C (56.1°F) and a low of 8.5°C (47.3°F). There's a significant drop in rainfall to 28mm (1.1") over 6.4 days from November. Winter is officially ushered in, continuing the trajectory of decreasing temperatures and daylight hours from November. While the city experiences relatively cooler temperatures, the sea maintains a mild temperature, favorable for certain water sports. The festive spirit engulfs the city with a host of Christmas and New Year festivities, bringing the year to a close on a vibrant note.Temperature
Barcelona in December witnesses an average high-temperature of a moderate 13.4°C (56.1°F), indicating a slight variation from November's 16.3°C (61.3°F). Barcelona maintains a consistent average nighttime low-temperature of 8.5°C (47.3°F) throughout December.Humidity
In December, the average relative humidity is 70%.Rainfall
In Barcelona, in December, it is raining for 6.4 days, with typically 28mm (1.1") of accumulated precipitation. Throughout the year, there are 117.9 rainfall days, and 435mm (17.13") of precipitation is accumulated.Snowfall
In Barcelona, snow does not fall in March through August, October through December.Sea temperature
In Barcelona, Spain, the average seawater temperature in December is 15.5°C (59.9°F).Note: Most people find it challenging to enjoy swimming in water that is 15.5°C (59.9°F). As water temperature falls below 21°C (69.8°F), controlling breathing grows increasingly difficult.
Daylight
December has the shortest days of the year in Barcelona, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 07:58 and sunset at 17:22. On the last day of the month, sunrise is at 08:17 and sunset at 17:31 CET.
Sunshine
The month with the least sunshine is December, with an average of 6.7h of sunshine.UV index
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 3 during December translates into the following directions:
Exercise prevention - Warding off sunburn is urged. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Barcelona, Spain
- Average high temperature in December: 13.4°C
The warmest month (with the highest average high temperature) is August (27.5°C).
The month with the lowest average high temperature is January (12.4°C).
- Average low temperature in December: 8.5°C
The month with the highest average low temperature is August (22.1°C).
The coldest month (with the lowest average low temperature) is February (7.1°C).
Average pressure in December
Barcelona, Spain
- Average pressure in December: 1020.7mbar
The month with the highest atmospheric pressure is December (1020.7mbar).
The month with the lowest atmospheric pressure is April (1014.7mbar).
Average wind speed in December
Barcelona, Spain
- Average wind speed in December: 11.1km/h
The windiest month (with the highest average wind speed) is March (12.1km/h).
The calmest month (with the lowest average wind speed) is August (9.3km/h).
Average humidity in December
Barcelona, Spain
- Average humidity in December: 70%
The months with the highest relative humidity are April and October (72%).
The months with the lowest relative humidity are February, June and November (68%).
Average rainfall in December
Barcelona, Spain
- Average rainfall in December: 28mm
The wettest month (with the highest rainfall) is October (73mm).
The driest month (with the least rainfall) is February (16mm).
Average rainfall days in December
Barcelona, Spain
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is September (13.8 days).
The month with the least rainy days is December (6.4 days).
Average snowfall in December
Barcelona, Spain
- Average snowfall in December: 0mm
The months with the highest snowfall are January, February and September (1mm).
The months with the least snowfall are March, April, May, June, July, August, October, November and December (0mm).
Average snowfall days in December
Barcelona, Spain
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, October, November and December (0 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: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 6h and 42min
The months with the most sunshine are June and July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Barcelona, Spain
- Average sunshine days in December: 22.9 days
The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is September (12.3 days).
Average UV index in December
Barcelona, Spain
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in December
Barcelona, Spain
- Average cloud cover in December: 25
The month with the most cloud cover is April (Cloud cover 31).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in December
Barcelona, Spain
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
