Few things change shopping habits faster in the UK than good weather. The moment temperatures rise, convenience stores tend to see an immediate shift in missions, with shoppers trading planned shops for impulse purchases, top-ups and last-minute social occasions.
Cold drinks, ice cream, barbecue food and alcohol are usually the first categories to surge. According to NielsenIQ, UK supermarket sales growth accelerated to 5.8% during the July 2025 heatwaves, with unit sales of soft drinks rising 14% and value sales climbing 21%. Frozen food sales also increased 12%, driven largely by ice cream and desserts[1].
Ice cream in particular continues to perform strongly in convenience. Industry data published earlier this year showed the UK ice cream market grew 12.7% in 2025 to reach £1.6bn, with convenience identified as the fastest-growing channel, up 16.5%[2].
Much of this increase comes down to spontaneity and impulse. Very few shoppers plan an ice cream trip in advance. The same applies to bags of ice, cold beers, soft drinks and barbecue essentials. These are highly weather-led purchases, often driven by the moment rather than a shopping list.
Convenience stores are perfectly positioned for that type of behaviour as they are local, fast and increasingly aligned to ‘food for now’ missions. As soon as temperatures rise, shoppers are more likely to make frequent top-up visits instead of larger weekly shops, particularly around social occasions.
While barbecue meats and alcohol remain strong performers, retailers are seeing growing demand for premium soft drinks, ready-to-drink cocktails, chilled desserts and food-to-go.
Store layout plays a major role in the spontaneous, impulsive nature of warm weather summer missions. Products that perform best are often the most visible ones, with secondary placements near entrances, tills and drinks chillers.
Price-marked packs also tend to come into their own during warmer periods. Lumina Intelligence noted continued growth in PMPs across convenience in 2025, particularly in soft drinks, as shoppers looked for visible value cues while making impulse purchases.
Importantly, good weather does not benefit all retailers equally. Larger destination shops may gain from barbecue and entertaining missions, but convenience retailers often win on speed and flexibility. Shoppers do not want to queue for a full weekly shop when all they need is ice, drinks or something for the garden.
Even short periods of sunshine can have a measurable impact. Sainsbury’s reported sharp increases in sales of ice cream, rosé wine, barbecue meats and bags of ice during the early summer heat in 2025, including a 90% week-on-week rise in single-serve lollies[3].
British weather may be unpredictable, but when temperatures rise, the channel remains uniquely placed to capture the spontaneous, last-minute and impulse-led shopping missions that come with it.
[1]Neilson: Nothing beats sunshine, sports and soft drinks as grocery sales surge at the beginning of summer 2025
