Average like-for-like revenues in the sector were up 5.4% from May with the fine weather and the football World Cup the most likely reasons for the increase.
The research, conducted using data from more than 100 organisations, showed that drink sales were up 6.7% and food sales up 3.3% on average.
Wet-led operators saw the greatest sales rise with growth of 5.9%, while food-led sites saw a 4.9% boost.
Catton Hospitality sales & marketing director Richard Hartley said: “We expect sales will continue to grow as the heatwave continues especially for the wet-led pubs that are already the biggest winners in beer sales, CO2 shortages notwithstanding. That said, I have not seen any impact of the CO2 issue apart from the odd product not being available.”
Commenting on the ongoing attraction of the World Cup for pubgoers, he added: “Although we are all hoping England will go through – even if they don’t go all the way – the later stages are still a huge draw for people to head to the pub.
“Other factors likely to affect pub sales in the next few months are the school holidays, which are almost upon us. The ongoing rise in domestic holidays, rather than heading overseas, will also result in more pub sales.”