Cardiff weather in January 2027

Expect daytime maximum temperatures of 7°C in Cardiff, Wales in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 104 mm of rainfall in the month.

  • 7°C maximum daytime temperature in January in Cardiff7
    7°C max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in January in Cardiff20
    20 days with some rainfall
  • 2°C minimum night-time temperature in January in Cardiff2
    2°C min night temperature
  • 8 hours of daylight per day in January in Cardiff8
    8 hours of daylight per day
  • No heat & humidity in January in Cardiff0
    No heat & humidity
  • 104 mm monthly rainfall in January in Cardiff104
    104 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Cardiff1
    1 (Low) UV index
  • 8°C sea temperature in January in Cardiff8
    8°C sea temperature

More about Cardiff

Cardiff by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec