Aldi is giving shoppers in Manchester the chance to enjoy a free glass of its Provence Rosé for National Rosé Day on Saturday.

With the Northwest identified by Aldi sales data as the UK’s biggest rosé-loving region, the German discounter set up the a pink billboard in the centre of Manchester that will dispense the tipple for free to passers by.

However, the billboard in St Ann’s Square, Manchester, will only decant rosé when the weather hits 19.2C, which is due to occur between 1pm and 7pm, today and tomorrow.

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Research by the supermarket found that rosé lovers enjoy an average of 63 glasses throughout summer, spending £11.34 a bottle, with the preference being a glass of provence consumed at 5.18pm.

The activity comes as Aldi saw a 134% uplift in spring/summer sales year on year, with the most successful day coinciding with the August heatwave.

The retailer also offered shoppers the chance to receive free bottles of wine earlier this year, in exchange for honest reviews of the products.

“Everyone’s heard the saying ‘it’s wine o’clock’ but we wanted to find out when it’s ‘rosé degrees’ – and according to the nation of rosé lovers, the ideal temperature is 19.2C,” managing director of buying at Aldi UK Julie Ashfield said.

“Setting up the world’s first billboard to dispense rosé at a certain warm temperature was a challenge in Manchester, which is noted for rain.”

Ashfield added: “But as the centre of the region which loves rosé more than any other in the UK , fortunately everything came up rosé.”

Mistress of wine Sam Caporn called rosé “the ideal summer drink”.

“When it comes to ‘whether’ to put ice in the glass or not, I’d advise rosé fans to be led by personal preference – which as ever – is all that really matters. Don’t worry too much about dilution as with rosé it’s all about refreshment and I love it being served super chilled.

“So let’s raise a glass to the nation’s favourite vino for summer sipping, a drop of pink!”