Many parts of East Anglia are suffering their most severe drought since the long-hot summer of 1976.
In some areas, like south Essex, the 10-month dry spell since July 2016 is worst on record.
It is causing problems for farmer and gardeners and many of the region's rivers are flowing at much lower levels than normal.
The Environment Agency says the groundwater stocks are generally below normal for the time of year with river flows also below average.
However water stocks in the region's reservoirs are near their normal operating levels.
April had only a third of its usual rainfall.
The River Cam in Cambridge and the River Ouzel in Bedfordshire and Buckinghamshire are both reported as flowing at 'exceptionally low levels' with about a third of the normal river flow.
The rainfall deficit over the past 10 months in the region amounts to 142 mm which is the equivalent of the rain that usually falls in two and a half months.