Wales Weather & Climate: the United Kingdom

Climate by month across Wales, the United Kingdom, average temperatures, rainfall and the best time to visit.

Climate overview of Wales

Wales in the United Kingdom sees its peak temperatures in August (20°C (68°F)) and its coolest in January (9°C (48°F)). For a full breakdown of what to expect throughout the year, we've put together a climate overview based on data from Cardiff, the region's most visited city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.

In Wales, during the months of July and August you can expect comfortable weather, with average temperatures ranging from 20°C (68°F) to 20°C (68°F).

The colder period typically falls in the months of January, February and December.

Precipitation in Wales shows some seasonal variation. You'll find the most rain in December (118 mm (4.6 in)), while March tends to be drier (76 mm (3 in)).

For those seeking sunshine, July usually has the brightest skies, making it an excellent time for exploring the region.

Explore Wales by month

Pick a month to see the average temperature, rainfall and sunshine in Wales — and find the best time to visit. (based on Cardiff)

Popular cities by month

Compare cities per month. Toggle cities on/off.

Cardiff Swansea
Day temperature (°C)
Monthly rainfall (mm)
Monthly sunshine (hours)

Climate map of Wales

Average daily temperature, monthly rainfall & sunshine hours across cities.

Avg day temp (°C)
32°

Compare popular cities

Average daytime and nighttime temperatures, yearly rainfall and sunshine.

Cardiff 9°C (48°F) 20°C (68°F) 4°C (39°F) 14°C (57°F) 1138 mm (45 in) 1,573 hours
Swansea 9°C (48°F) 20°C (68°F) 4°C (39°F) 14°C (57°F) 1334 mm (53 in) 1,573 hours

Places in Wales, the United Kingdom

Select a city to see its average temperature, precipitation and hours of sunshine over the year.

Popular cities

Explore more

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.