A boost from the Jubilee tailed off throughout June as dismal weather kept shoppers away.

According to Nielsen data, the three months to 23 June saw the weakest growth for the early summer period in seven years.

Sales in the week leading up to the Jubilee bank holiday were up 12.5% year on year. But growth across the UK’s leading supermarkets stood at just 3.8% in the month to 23 June.

“The ‘Summer of Events’ – including the Jubilee, the Euro 2012 football and the London 2012 build-up – couldn’t prevent the poorest early summer period of sales growth since 2005,” said Nielsen’s Mike Watkins.

“There was no sustainable uplift in food sales during June despite these events and promotional discount activity being maintained at 35% of FMCG sales.”

Asda and Sainsbury’s showed the strongest growth among the major multiples, while Tesco and Morrisons both lost market share.

“However, it’s still the discounters of Aldi and Lidl who are outperforming the market, with a collective +31% growth in FMCG sales in the last 12 weeks,” Watkins said.