Cardiff Weather Guide

The weather in Cardiff gradually changes throughout the year as all four seasons roll through, however on a day-to-day basis the climate can be quite unpredictable. The geographic location of the city, being tucked into the Bristol Channel, protects it from extreme weather, which is always good news for travellers. Generally, the weather in and around Cardiff is mild and rarely gets affected by snow in the winter season. The air in the city also feels fresh compared to other capital cities making summer warm and pleasant for the most part.

Season and Clothing

Winter: November to March

Spending the winter in Cardiff can be not so pleasant if the contents of your suitcase don’t match the seasonal weather conditions outside. More often than not, winter in Cardiff features wind gusts, rain with a fine mist and cold crisp temperatures. But never fear – the pubs are always warm and there’s plenty of indoor attractions to keep you occupied and dry.

Average temperatures: 2 - 10 degrees Celsius.
Appropriate clothing: Winter clothing including a waterproof coat, thick jumper and walking boots.
Don't forget: Hat, gloves and an umbrella.

Spring: April to May

Many visitors like to visit Cardiff during the second half of springtime when flowers line the high street and gardens and sunshine is more common. The weather is significantly calmer in spring too, as the days get longer and temperatures crank up towards summer. Rain and wind can still set in on the odd day though, so pack with care. The annual Walking Festival also happens around May offering visitors the chance to explore the countryside while following a structured course.

Average temperatures: 5 - 16 degrees Celsius.
Appropriate clothing: Warm layers, especially a decent coat.
Don't forget: An umbrella and sunnies.

Summer: June to August

The summertime is definitely the most popular time to visit the Welsh capital as temperatures are comfortable - perfect for exploring the city and wider landscape. During most summer days, the sky is clear making for slightly chilly mornings and glorious afternoons. From June through to August, the annual Cardiff Festival plays out featuring sporting activities such as water rafting as well as food and drink fairs with many venues also offering in-house entertainment.

Average temperatures:  12 – 26 degrees Celsius.
Appropriate clothing: Casual warm weather clothing along with pants and a jacket for night.
Don't forget: Sunscreen, a hat and sunglasses.

Autumn: September to October

During the autumn season, temperatures drop and a wintery fresh feel descends over the city. The landscape is stripped bare as trees shed their leaves and flowers wilt away. Temperatures tend to hit a daily high of 14 degrees Celsius, however showers become more sustained. The weather is a little choppy in this season, so be aware it may be sunny and warm at the start of the day, but winds regularly shift bringing cloud and eventual showers. For those unpredictable days,  head to the internationally acclaimed St David’s Mall for entertainment, food and, of course, all  the high-end fashion you could wish for in the 200+ stores.

Average temperatures:  8 -18 degrees Celsius.
Appropriate clothing: Layers to protect against cold wind and periods of sustained rainfall.
Don't forget:  An umbrella.