Having a strategy for beating water shortages in the event of a drought or lower rainfall in the UK may seem like a wasted effort. Ask almost anyone, and you'll be told that it rains here nearly every day. If we get two nice days, then you can bet a thunderstorm will be on the horizon.
The UK’s average rainfall in 2015, for example, was just over 129 cms, about 51 inches, and that figure is actually about 12% higher than normal. Not only that, but that average overlooks the wide range of values that exists between regions.
Snowdonia in Wales, for example, is the wettest, with approximately 300 cms (118 inches) per year, while southeast Essex is generally the driest with less than 51cms (20 inches) annually. Yet, even these quantities cannot be predicted with certainty.
Some years we get a lot more and, in others, less.
In 2016, for example, numerous thunderstorms moved up from the Continent and delivered torrential rain to a normally dry Essex. Summer in the UK never materialized, as the sub-tropical jet stream remained south of us. In other words, we experienced wintertime weather patterns in the summer. This is disappointing, though not unprecedented.