As UK weather conditions reamain unstable, parts of the UK could face heavy rain on Sunday (5 July). The latest Met Office forecast said some areas of the UK, including Scotland and the north west of England, could see “outbreaks of rain”.

The forecaster added that the areas most likely to see rain are the northwest Scotland and Northern Ireland, while it is likely to be “mainly dry and bright elsewhere, with sunny spells”. There could be, howver, very different conditions in the south and east of England as the weather could be “turning hot”.

Rain, however, could reach the UK as early as Friday, with showers reaching the north-west England, Scotland, and Northern Ireland, while areas in the south remain mostly dry. The worst-affected areas are forecast to be Cumbria, which could see localised downpours up to 4mm/hr, the East Riding of Yorkshire and Lancashire, though no more than 2mm/hr is expected.

The prolonged marine heatwave is set to intensify next week, with temperatures of 39C forecast. According to the forecaster surface waters in north-west European seas are currently experiencing moderate to severe marine heatwave conditions, with numerous areas classified as “strong” and some as “severe”.

Net Weather maps said the UK can expect to see the extreme highs peak on Thursday, July 9 as London is expected to reach a whopping 39C. It also said the capital and nearby Berkshire are expected to reach 39C, with Hertfordshire also forecast to climb to 38C.