Cardiff weather in May 2020

Get the latest coronavirus (COVID-19) updates for the UK with current travel advice, statistics and online resources.

  • 16°C maximum daytime temperature in May in Cardiff16
    16°C max day temperature
  • 6 hours of sunshine per day
  • 15 days with some rainfall in May in Cardiff15
    15 days with some rainfall
  • 7°C minimum night-time temperature in May in Cardiff7
    7°C min night temperature
  • 16 hours of daylight per day in May in Cardiff16
    16 hours of daylight per day
  • No heat & humidity in May in Cardiff0
    No heat & humidity
  • 65 mm monthly rainfall in May in Cardiff65
    65 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Cardiff5
    5 (Moderate) UV index
  • 12°C sea temperature in May in Cardiff12
    12°C sea temperature
  • Top deals & discounts
  • Cardiff weather overview
  • Cardiff climate averages by month
  • More destinations
  • Best time to go to Cardiff
  • Cardiff 5-day weather forecast

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

The May weather guide for Cardiff, Wales shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

  • Browse latest offers on 204 campsites in Wales
  • Filter campsites by price, star rating, facilities & activities
  • Search by travel dates & browse by map

How warm is it in Cardiff in May?

Daytime temperatures usually reach 16°C in Cardiff in May, falling to 7°C at night.

How sunny is it in Cardiff in May?

There are normally 6 hours of bright sunshine each day in Cardiff in May - that's 41% of daylight hours.

How warm is the sea around Cardiff in May?

The average sea temperature around Cardiff in May is 12°C.

Does it rain in Cardiff in May?

There are usually 15 days with some rain in Cardiff in May and the average monthly rainfall is 65mm.

Cardiff sunrise & sunset times for May 2020

Browse the sunrise & sunset times for Cardiff in May 2020. Select a month to view Cardiff sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2020 05:44 20:37
Saturday, 16th May 2020 05:19 21:00
Sunday, 31st May 2020 05:02 21:20
  • Save on holidays to Wales with latest offers
  • Visit Snowdonia, Pembrokeshire & South Wales
  • Book online with Just Go Holidays today

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Where's hot in Wales in May?

Below are average maximum temperatures at popular destinations in Wales in May. Select a destination to see more weather parameters.

More destinations & map >>

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.