Storm maps show exact date almost all of the UK to be hit by 685-mile wall of rain

Weather maps have revealed that a massive barrage of rain will hit the UK next week. According to WXCharts, the heavy downpour will stretch from as far south as Southampton all the way north to Wick, Scotland.

According to the forecaster, showery spells will kick in right from midnight on September 19 and will continue throughout the day, when they are expected to cover nearly the entire country.

A weather map of the UK at 6am shows the intense rainy conditions sweeping in from the Atlantic Ocean, where it makes its way to the country.

The West Midlands and northern England are on track to see the highest amount of precipitation, with levels hitting between 3mm and 5mm per hour as early as 6am.

By the early evening, some parts of the UK will have cleared up, including the entire East Midlands region and parts of southeast England, such as Essex. However, many areas will still be impacted by persistent rain.

The Met Office also notes that most of the country will be impacted by rain in its long-range weather forecast for Friday, September 12, to Sunday, September 21.

It said: "This period is likely to start out unsettled, with low pressure dominating the pattern. This will mean showers or longer spells of rain will affect most of the UK at times. Some heavy rain or showers are expected in places, most often in the west and north.

"Thunderstorms and hail are also possible, as are some spells of strong winds, especially if any deep areas of low pressure develop and affect the UK."

It has also revealed that temperatures will be "close to average or slightly below average," which is reflected in the WXCharts maps showing temperatures ranging between 7C and 17C on September 19.