- Browse top deals on spa breaks in UK & Ireland
- Search by postcode, venue, town or county
- Filter deals by destination, price, package & facilities
Wales weather in May 2025
Expect daytime maximum temperatures of 61°F in Wales, UK in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 15 days with some rainfall and typically 2.6 inches of rainfall in the month.
- 61°F max day temperature
61 - 6 hours of sunshine per day
- 15 days with some rainfall
15 - 45°F min night temperature
45 - 16 hours of daylight per day
16 - No heat & humidity
0 - 2.6 inches of monthly rainfall
2.6 - 5 (Moderate) UV index
5 - 54°F sea temperature
54
More about Wales
- Overview
- Best time to visit
- Weather by month
- 5-day weather forecast
- Destinations
- Travel advice
- Deals & discounts
Wales by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Wales
The May weather guide for Wales (Cardiff) 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.
Top Wales destinations
Below are average maximum temperatures at popular countries, regions and places in Wales in May. Select a holiday destination to see more weather parameters.
All Wales regions
All Wales destinations
- Aberaeron
- Abergavenny
- Aberystwyth
- Bangor
- Barmouth
- Betws-y-Coed
- Brecon
- Builth Wells
- Caernarfon
- Camarthen
- Cardiff
- Chepstow
- Colwyn Bay
- Cowbridge
- Fishguard
- Gower Peninsula
- Haverfordwest
- Hay-on-Wye
- Holyhead
- Lake Vyrnwy
- Llangollen
- Machynlleth
- Monmouth
- Pembroke
- Porthcawl
- Porthmadog
- Pwllheli
- Rhayader
- Rhyl
- St Davids
- Swansea
- Tenby
- Welshpool
- Wrexham
Metric (°C) | Imperial (°F)
More about Wales
How warm is it in Wales in May?
Daytime temperatures usually reach 61°F in Cardiff, Wales in May, falling to 45°F at night.
How sunny is it in Wales in May?
There are normally 6 hours of bright sunshine each day in Cardiff, Wales in May - that's 41% of daylight hours.
How warm is the sea around Wales in May?
The average sea temperature around Cardiff, Wales in May is 54°F.
Does it rain in Wales in May?
There are usually 15 days with some rain in Cardiff, Wales in May and the average monthly rainfall is 2.6 inches.
Wales May sunrise & sunset times
Browse the sunrise and sunset times for Wales in May 2025. Select a month to view Wales sunrise and sunset times for the next 12 months. The Wales sunrise and sunset times shown below are for Cardiff.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Thursday, 1st May 2025 | 04:44 | 19:36 |
| Friday, 16th May 2025 | 04:19 | 20:00 |
| Saturday, 31st May 2025 | 04:02 | 20:19 |
Be inspired
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Related posts
Popular travel offers
Explore holidays in the sun for less
- Beach holidays
- Family holidays
- City breaks
- Summer holidays
- Winter sun holidays
- Holiday offers
- Top travel brands
- Airlines & flights
- Discount hotels
- Airport parking deals
- TUI
- Jet2holidays
- easyJet holidays
- Love Holidays
- January sales
Airport parking
- Manchester Airport
- Stansted Airport
- Bristol Airport
- Luton Airport
- Birmingham Airport
- Edinburgh Airport
- Gatwick Airport
- Glasgow Airport
- Newcastle Airport
Airport lounges
- Manchester Airport
- Birmingham Airport
- Bristol Airport
- Edinburgh Airport
- Glasgow Airport
- Heathrow Airport
- Newcastle Airport
- Stansted Airport
- Gatwick Airport