Barcelona weather in December
December in Barcelona: cool, a little rain, with clean air — a great time to visit.
#9 of 12 months in Barcelona · #167 of 604 destinations to visit in December · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Barcelona climate normals — December
| Daytime high | 15°C / 58°F | 🙂 cool |
|---|---|---|
| Nighttime low | 8°C / 46°F | |
| Feels like (high) | 13°C / 55°F | |
| Rainfall | 33 mm / 1.3 in | 🌦 some rain |
| Rainy days | 5 days | |
| Humidity | 78% | 💦 very humid |
| Dew point | 7°C / 45°F | |
| Sunshine | 7.3 h/day | |
| Daylight | 9.2 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 46 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Barcelona in December — FAQ
- Is December a good time to visit Barcelona?
- December in Barcelona: cool, a little rain, with clean air — a great time to visit. It ranks #9 of 12 months for Barcelona on SeasonMap's comfort score (79/100).
- What is the weather like in Barcelona in December?
- In December, Barcelona averages a daily high of 14.6°C and a low of 7.5°C, with about 33.4 mm of rain over roughly 4.8 rainy days.
- What is the air quality in Barcelona in December?
- Barcelona has a mean US Air Quality Index of about 46 in December.