Wales weather

Our guide to the weather in Wales during May

13

Average high

4

UV Index

80mm

Monthly rainfall

85%

Humidity

We've looked at the most up-to-date weather data for Wales, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Wales weather in May.

What's the temperature like in Wales during May?

The temperature reaches around 13℃ during the daytime in May, falling away to 4℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Wales during May?

On average, there will be 7 rainy days during the month, amounting to 79.7mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Wales during May?

You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during May. With moderate air temperatures, any breeze will feel cool.

Holidays in Wales

Holiday deals you might be interested in

...

South Wales: 2 nts w/Caerphilly Castle tkts & dinner

£129pp

Breakfast

2-nights

...

Newport: 4* Christmas market stay in NEW hotel w/breakfast

£25pp

Breakfast

1-night • December

Join the club...

Be the first to hear about discounted holidays, flash sales and amazing travel competitions to Wales!

Wales Blog posts

From the UK's most popular travel bloggers

...

3-Day Wales Itinerary from Cardiff: Castles, Coast, and Countryside

10th March 2026 by The Wandering Quinn

Exploring Wales in just three days may seem like a challenge, but with a well-planned itinerary, you can experience the best of this stunning country. By concentrating on a specific region, particularly around Cardiff, you can uncover a wealth of attractions, from majestic castles to breathtaking coastlines and picturesque countryside. This guide will help you make the most of your Welsh escape, ensuring you don’t miss out on the highlights....

...

Best Time to Visit Wales by Seasons & Activities

30th December 2025 by The Wandering Quinn

Wondering when to plan your next escape to Wales? This guide will walk you through the best times of year to visit, highlighting the weather and seasonal activities that make each period unique. While April to September generally offers the most favourable conditions, there’s plenty to enjoy in every season. Let’s explore what Wales has to offer throughout the year!...

...

Glamping in Wales: The Best Places for a Countryside Escape

30th December 2025 by The Rare Welsh Bit

Wales has emerged as a top choice for glamping enthusiasts, boasting a diverse range of stunning landscapes and an increasing selection of well-managed sites. Whether it's a mountain retreat in the north or a tranquil woodland hideaway in Mid and West Wales, glamping in this beautiful country provides the perfect opportunity to unwind while enjoying a touch of luxury. Discover the best spots for your next countryside escape in Wales....

...

Elan Valley Travel Guide: Why You Should Visit Wales’ Most Scenic Escape

16th June 2025 by Hand Luggage Only

Tucked away in the picturesque landscapes of Mid Wales, the Elan Valley is a hidden gem that deserves a spot on every traveller's itinerary. With its breathtaking trails, serene lakes, and scenic drives, this area offers a perfect blend of natural beauty and outdoor adventure. Whether you're seeking a peaceful escape or an active day out, the Elan Valley has something for everyone....

...

20 Very Best Places in North Wales to Visit (and How to Find Them)

22nd January 2026 by Hand Luggage Only

North Wales is a true treasure trove for those looking to explore the beauty of Wales. With its breathtaking beaches, majestic mountain ranges, charming villages, and the stunning Snowdonia National Park, there's something to captivate every type of traveller. The best part? Many of these remarkable spots are conveniently scattered throughout the region, making it easy to discover them all. Let’s dive into the top places to visit in North Wales....

...

Exploring the UK on a Budget: Best Tips for Affordable Travel

16th February 2025 by Travel Vixta

Exploring the United Kingdom doesn’t have to break the bank. With a wealth of attractions and experiences available at little to no cost, it’s entirely possible to enjoy a memorable holiday without a hefty budget. From charming towns to vibrant cities, there are plenty of ways to make the most of your travels while keeping expenses in check. Here are some top tips for affordable travel across the UK....

...

The Best Places To Visit In Wales During The Winter

4th November 2024 by The Rare Welsh Bit

Winter in Wales brings a unique charm to this enchanting destination that captivates visitors throughout the year. Despite the cooler and wetter weather, the landscape of Wales takes on a special character during the winter months. From misty hills to sweeping coastlines, Wales offers a variety of winter experiences for all, whether you prefer outdoor adventures or cosy indoor retreats. Join in as we explore the best places to visit in Wales during the winter season....

Weather in Wales

Our month-by-month guide to the weather and climate in Wales

4.1

Wales weather in

January
5.0

Wales weather in

February
7.5

Wales weather in

March
10.4

Wales weather in

April
12.7

Wales weather in

May
15.6

Wales weather in

June
17.0

Wales weather in

July
16.4

Wales weather in

August
14.5

Wales weather in

September
11.3

Wales weather in

October
7.5

Wales weather in

November
4.8

Wales weather in

December