Cardiff weather in May (Wales, United Kingdom)

How is May weather typically in Cardiff? This guide provides the necessary weather information for your travel plans.

Temperatures

The month of May in Cardiff typically includes moderate temperatures and moderate rainfall. Expect the temperatures during the day to hover around 16°C. At night, they will likely drop to about 9°C.

Precipitation

Cardiff in May usually receives moderate rainfall, averaging around 79 mm for the month. Past climate data indicates that roughly 15 days will see rain.

Average sunshine

There are approximately 197 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

If your ideal day consists of dry skies and moderate temperatures July and August generally stand out with the best circumstances. While January, February, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Cardiff climate page with graphs.

 

Cardiff, monthly averages in May

Min Temperature 9°C  

Max Temperature 16°C  

Water Temperature 11°C  

Chance of Rain 51%  

Precipitation 79 mm  

Rainy days 15 days  

Humidity 74%  

Windspeed 14 km/h  

Sunshine 197 hours  

Percentage Sunshine 41%  

Where to go in the United Kingdom in May

Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay. With a water temperature of around 11°C there is no need to bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Cardiff.

Our site offers climate and forecast data for every country in the world. Are you going to the United Kingdom? On this website you can find historical weather averages for many cities in the United Kingdom. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.