This post is about the weather in January in Barcelona.
Temperatures are milder than most of northern Europe and the city's attractions are less crowded.
Temperature
Daytime high temperatures will most likely be near 13-14 C (56-57 F) with a few of the warmer days making it up near 16-17 C (low 60s F).
The record high temperature in Barcelona during January is 19 C (66F).

Late night and early morning low temperatures will likely be around 4-5 C (lower 40s F) with a few of the colder mornings dipping down to near 1 C (33-34 F) with 2 mornings, on average reaching 0 C (32 F) or less.
The record low temperature in Barcelona during January is -7 C (19F).
Clouds and Rain
You can expect about 17-18 days this month with sunny or at least partly sunny skies.
About 5 days record some rainfall, but rain amounts tend to be light.

Snow normally does not fall in Barcelona, however, it can occur on rare occasions in the inland hilly areas around the city.
Daylight
You can expect about 9.25 hours of daylight on New Year’s Eve increasing to just over 10 hours by the 31st.
Windspeed
During January, the wind speed in Barcelona tends to be light, averaging 4-12 mph (6-19 kph) but occasionally can be moderate at 13-18 mph (20-28 kph).
Ocean Temps
January is not the best time to be at the beach as the average water temperatures will be around 13-14 C (56-57F).
What to wear in Barcelona During January?
January is cold so bring along clothes suitable for early Winter.
We recommend long-sleeved shirts and tops, as well as a couple of sweaters plus a warm coat or jacket.
Add a scarf or two and don’t forget some comfortable walking shoes.
Things to Do in Barcelona in January
Although it can get cold this time of year, you might still want to consider taking a pay-what-you-wish walking tour in Barcelona.
Football fans will be happy to know that FC Barcelona usually plays at least a few matches at home this month.
Even if you miss a game, you can typically take a tour of Camp Nou Football Stadium throughout January.
If you're looking to stay warm indoors, consider going to see some authentic Flamenco dancing at one of the local venues.
There will be two parades this month: The Three Kings Parade on January 5th and the Tres Tombs Parade in the Sant Antoni neighborhood on the first Saturday after St. Anthony's Day (January 17th).
For more fun ideas, make sure to read our full post covering things to do in Barcelona in January.