It comes just months after supermarkets suffered from supply chain disruptions due to Russia’s invasion of Ukraine, although the situation improved in the lead-up to Christmas.
Tomatoes are in short supply on supermarket shelves due to bad weather in Europe and Africa.
But in Morocco, growers have struggled with cold weather, heavy rain and floods.
Suppliers have been hit by ferry cancellations, which have affected lorry transport.
Spanish crops have also been affected by bad weather in the past three or four weeks.
Andrew Opie, director of food and sustainability at the British Retail Consortium, which represents UK supermarkets, said: “Difficult weather conditions in the south of Europe and northern Africa have disrupted harvest for some fruit and vegetables including tomatoes.
“However, supermarkets are adept at managing supply chain issues and are working with farmers to ensure that customers are able to access a wide range of fresh produce.”
Last year, Britain’s supermarkets suffered from supply chain disruptions after Russia’s invasion of Ukraine, although the situation improved as Christmas drew nearer.