This year's crops of British strawberries are predicted to be 50% larger than last year's - with higher brix.
According to British summer fruits, strawberries ripened under about 166 hours of sunlight in April - 7% above the monthly average.
Bright days have been coupled with cool nights, which "allows strawberry plants to rest well and put their energy gained during the day into producing high natural sugars overnight," said Rupert Carter, technical director of WB Chambers Farms.
"This process makes the berries sweeter and is one of the main reasons for such good tasting fruit," he added.
Nick Marston, chairman of British Summer Fruits, said that while rising energy and labor costs are presenting "real challenges," UK strawberries "remain a true success story."
"The UK is totally self-sufficient in strawberries for the entire summer season, which now runs from May to October as farms continue to advance growing techniques, such as large-scale glasshouse production for season extension," Mr. Marston added.
Last year, Britons bought more than 87,000 tonnes of British strawberries.
According to figures from data analysts Kantar, the industry is worth more than £769m to the British economy.