Our soggy summer could also be the coldest for 18 years with forecasters warning of a miserable start to the school holidays.
The Met Office said the average central England temperature in June was just 13.8C (57C) – the coldest since 1991, which saw 12.1C (54F).
July has so far averaged 15.8C (60F) and if, as forecasters warn, the rest of the month and August do not improve, the average for June to August will be just 15.1C (59F).
That means this year would be the coldest summer overall since 1993, which averaged 14.9C (59F) from June to August.
Rain has fallen across most areas regularly since the drought ended at the start of June, with 83.1mm (3.27in) on average across Britain in June with more following this month.
This summer is also the dullest since 2008, with June’s 180.8 sunshine hours the lowest for three years.
Although London could nudge 25C (77F) today, most of the country will see just 16C to 19C (61F-66F).
‘We forecast a ‘brolly and sunblock’ summer and the brolly has certainly been needed lately,’ said Jonathan Powell of Positive Weather Solutions.
‘I expect the mixed summer to continue with a real mixed bag of washout days with torrential rain and dry days with pleasantly warm sunshine.’