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Wales weather in August

Thinking about venturing to Wales this August and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Wales in August?

Wales is a region in the United Kingdom. August in Wales generally has pleasant temperatures, with precipitation levels ranging from moderate to high. August is a summer month.

You can expect pleasant maximum daytime temperatures of around 20°C and nighttime temperatures around 14°C in Cardiff. On average, August is the month with the highest temperature of the year in Wales.

In August, precipitation varies across different areas. From moderate rainfall in Cardiff with an average of 98 mm to high rainfall in Swansea with 109 mm. Cardiff enjoys a balanced 184 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

To learn more about the conditions in specific areas of Wales in August, check out the map below. For more details on the yearly weather, visit our Wales climate page.

Where to go in Wales in August

Find the average weather conditions in August for the most popular destinations in Wales on the map below. Click on a destination dot for more detailed information.

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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).

Popular destinations in Wales

What is the weather like in August for the 2 most popular destinations in Wales?

Average weather in Cardiff

In August Cardiff generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 14°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Cardiff
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
20°C 
14°C 
202 hours 
85 mm 
13 days 
20°C 
14°C 
184 hours 
98 mm 
15 days 
18°C 
12°C 
149 hours 
90 mm 
16 days 
Climate in Cardiff

Average weather in Swansea

In August Swansea generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 14°C and high monthly rainfall. So on average the conditions are pleasant that month.

Swansea
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   July July
<<  
20°C 
13°C 
202 hours 
98 mm 
13 days 
20°C 
14°C 
184 hours 
109 mm 
16 days 
18°C 
12°C 
149 hours 
103 mm 
16 days 
Climate in Swansea

Is your destination not in the list? Have a look at other destinations in Wales, in the United Kingdom.

Is August the best time to visit Wales?

We believe that August is one of the best times to visit Wales with overall perfect weather in Cardiff. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, July and August provide perfect weather in Cardiff. In contrast, January, February, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Wales. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to the United Kingdom? Get detailed 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 climate conditions. Find out where to go with our weather planner.