Cardiff Weather in January

With daytime temperatures of 9°C (48°F) and nighttime lows of 4°C (39°F), January in Cardiff brings low temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 105 mm (4.1 in) falls on average.

Rainfall in Cardiff in January

Typically, you can expect about 20 days of rain this month, with 105 mm (4.1 in) on average. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in Cardiff in January

Cardiff in January gets highs of 9°C (48°F) during the day and drops to 4°C (39°F) at night. January is known for being in the winter season. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. At 4°C (39°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions. This period often claims the chilliest monthly averages of the year.

Sunshine in Cardiff in January

This month is characterized by fewer sunny days, with about 53 hours of sunshine. It's great for those who appreciate cooler, less sunny days.

Wind Speed in Cardiff in January

January has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.

Average water temperature in January

The water sits at 8°C (46°F) this month, which is well below what most people consider swimmable. Wetsuits help, but expect it to still feel cold.

January in Cardiff has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.