Average weather in Wrexham during August is 14. You can expect highs around 20 with lows about 12 degrees. With the details being further below:
 

 

Wrexham, UK Weather in August FAQs

What’s the weather looking like?

Typically you will see 14 degrees celsius

So what’s it like during the summer?

Daily summer temperatures are about 20 celsius

Useful Links: Wrexham Weather: Average Weather & Yearly Climate