Cologne weather in December
December in Cologne: cold, rainy, with clean air — one of the weakest months to visit.
#11 of 12 months in Cologne · #492 of 604 destinations to visit in December · comfort 49/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Cologne climate normals — December
| Daytime high | 7°C / 44°F | 🧥 cold |
|---|---|---|
| Nighttime low | 3°C / 38°F | |
| Feels like (high) | 4°C / 39°F | |
| Rainfall | 118 mm / 4.7 in | 🌧 rainy |
| Rainy days | 18 days | |
| Humidity | 86% | 💦 very humid |
| Dew point | 3°C / 37°F | |
| Sunshine | 2.5 h/day | |
| Daylight | 8 h | |
| Wind | 20 km/h / 12 mph | |
| Snowfall | 1.9 cm / 0.7 in | |
| Air quality (US AQI) | 35 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Cologne?
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Cologne in December — FAQ
- Is December a good time to visit Cologne?
- December in Cologne: cold, rainy, with clean air — one of the weakest months to visit. It ranks #11 of 12 months for Cologne on SeasonMap's comfort score (49/100).
- What is the weather like in Cologne in December?
- In December, Cologne averages a daily high of 6.9°C and a low of 3.1°C, with about 118.4 mm of rain over roughly 18 rainy days.
- What is the air quality in Cologne in December?
- Cologne has a mean US Air Quality Index of about 35 in December.
- Does it snow in Cologne in December?
- Cologne sees roughly 1.9 cm of snowfall in December.