London vs Dublin

London and Dublin are closely matched in January. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.

London is on the cooler side at 7°C, requiring warmer clothing. Dublin is cooler at 8°C.

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

London reaches an average high of 7°C (45°F) and drops to 2°C (36°F) at night during January. The daily temperature range is 5°C, meaning relatively stable temperatures from day to night.

Dublin averages 8°C (46°F) for the high and 4°C (39°F) for the low, with a daily range of 4°C. The two cities feel quite similar in terms of temperature.

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

London receives approximately 55 mm of rainfall across 11 rain days during January. You can expect rain roughly every other day.

Dublin sees 70 mm over 13 rain days. That makes London the drier option by 2 rain days and 15 mm of total precipitation.

Both cities share similar humidity levels at 65%.