London vs Cologne

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, London edges ahead as the better destination in December. London offers 4 hours of daily sunshine with only 11 rain days, while Cologne sees 3 sunshine hours and 16 rain days.

London is on the cooler side at 8°C, requiring warmer clothing. Cologne is cooler at 6°C.

For travelers who prioritize dry weather, London is the stronger choice in December. London receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

London reaches an average high of 8°C (46°F) and drops to 3°C (37°F) at night during December. The daily temperature range is 5°C, meaning relatively stable temperatures from day to night.

Cologne averages 6°C (43°F) for the high and 1°C (34°F) for the low, with a daily range of 5°C. The 2°C difference is noticeable but not dramatic.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in December.

London receives approximately 58 mm of rainfall across 11 rain days during December. You can expect rain roughly every other day.

Cologne sees 97 mm over 16 rain days. That makes London the drier option by 5 rain days and 39 mm of total precipitation.

Both cities share similar humidity levels at 65%.