- Save EXTRA £50 on UK breaks with Luxury Cottages
- No minimum stay. Book online with exclusive discount code
- Offer cannot be combined with other promotions
Wales weather in August 2025
Expect 20°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Wales in August. Check more long-term weather averages for Wales in August before you book your next holiday to Wales in 2025/2026.
- 20°C max day temperature
20 - 6 hours of sunshine per day
- 15 days with some rainfall
15 - 12°C min night temperature
12 - 15 hours of daylight per day
15 - No heat & humidity
0 - 81 mm of monthly rainfall
81 - 6 (High) UV index
6 - 18°C sea temperature
18
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
Show discount code
******C50
******C50
Expires at 23:59 on Tuesday 31st Dec 2024 · View all Luxury Cottages offers
UK holiday finder
The August 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 August. 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 / mm) | Imperial (°F / inches)
More about Wales
How hot is it in Wales in August?
Daytime temperatures usually reach 20°C in Cardiff, Wales in August, falling to 12°C at night.
How sunny is it in Wales in August?
There are normally 6 hours of bright sunshine each day in Cardiff, Wales in August - that's 41% of daylight hours.
How warm is the sea around Wales in August?
The average sea temperature around Cardiff, Wales in August is 18°C.
Does it rain in Wales in August?
There are usually 15 days with some rain in Cardiff, Wales in August and the average monthly rainfall is 81mm.
Wales August sunrise & sunset times
Browse the sunrise and sunset times for Wales in August 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 |
|---|---|---|
| Friday, 1st August 2025 | 04:37 | 20:00 |
| Saturday, 16th August 2025 | 05:00 | 19:33 |
| Sunday, 31st August 2025 | 05:24 | 19:01 |
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
- Boxing Day 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