Barcelona Weather in December
Spain · Mediterranean climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Barcelona sees average temperatures ranging from a low of 5.9°C (42.6°F) to a high of 15.2°C (59.4°F), with a mean of 9.9°C (49.8°F). Compared to the annual average of 16.7°C (62.1°F), this month is 6.8°C cooler than the yearly norm. Precipitation averages 20.0mm, making it approximately 32.0mm drier than the monthly average of 52.0mm. This is the driest month of the year, with just 20.0mm of precipitation. The city receives an average of 7.7 hours of sunshine per day during December, with relative humidity averaging 75.7%. Wind speeds reach an average maximum of 15.2 km/h. For travelers, this month offers a temperature experience in Barcelona, with drier-than-average conditions compared to the rest of the year.
If you're planning trail runs or beach days in Barcelona, timing is everything. I did the Carretera de les Aigües route in May and conditions were flawless — 21°C, 12km/h breeze, UV at 6. July-August pushes UV to 9+, which is brutal between noon and 4pm; shift activities to early morning. Sea temperature hits 26°C in August, perfect for swims. The wind picks up reliably afternoons year-round, helping with heat but making paddleboarding tricky. October is the unsung hero for hiking — cool, golden light, empty paths.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | 13.8°C (56.8°F) | 9.9°C (49.8°F) | 8.4°C (47.1°F) |
| Rainfall | 57.2mm | 20.0mm | 52.1mm |
| Sunshine | 7.5 hrs | 7.7 hrs | 7.8 hrs |
| Humidity | 77.2% | 75.7% | 74.9% |
| Wind | 17.0 km/h | 15.2 km/h | 16.7 km/h |
| Rainy Days | 12.8 | 6.8 | 7.2 |
| Snowfall | 0.0 cm | 0.0 cm | 0.1 cm |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Barcelona in December, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Barcelona in December?
The average temperature in Barcelona during December ranges from 5.9°C (42.6°F) to 15.2°C (59.4°F), with a mean of 9.9°C (49.8°F).
How much does it rain in Barcelona in December?
Barcelona receives an average of 20.0mm of precipitation in December, spread across approximately 6.8 rainy days. This is the driest month of the year.
What should I pack for Barcelona in December?
Based on December weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is December a good time to visit Barcelona?
December is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Barcelona
Cities with Similar December Climate (Mediterranean)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 41.39°, 2.17°. Timezone: Europe/Madrid. Last updated: 2026-07-30.