Half a month's rain could fall in a single day in parts of the country this week.
The south west and Wales are likely to be the worst affected, with up to 25mm on Tuesday.
Towards the end of the week there will be spells of sunshine and showers, with temperatures climbing to 15C (59F) or 16C (61F) in London on Thursday and Friday.
Rescue workers searching for a missing woman after her home partially collapsed have recovered a body as the UK's weather is set to worsen.Read the full story ›
The water level in Bewl Water near Lamberhurst in Kent is at 93% of its capacity following heavy rain over the festive period.
These photographs, taken roughly a year apart, show the same sign.
Even the wet weather - and there was plenty of it - failed to dampen our spirits in a great year for Britain.Read the full story ›
The head of policy at environmental group Friends of the Earth, Mike Childs, has said that experts expect to see extreme weather events such as intense rainfall become more common as a result of global warming:
So far, the world has warmed by an average 0.7°C above pre-industrial levels - if temperatures rise by the 4°C scientists widely predict then we can only begin to imagine the impacts on our lives and livelihoods.
But there is still time to tackle climate change. We must end our dependency on dirty fossil fuels and reap the benefits of energy efficiency and developing clean power from the wind, waves and sun.
This map shows levels of rainfall across the UK in 2012 in relation to the average in the 30 years up to 2010.
Everything above 100% (coloured pale to dark blue) is above the average and everything below that figure (coloured pale to dark brown) denotes less-than-average rainfall.
The Met Office has disclosed preliminary evidence suggesting the UK could be experiencing more intense downpours than in the past. Professor Julia Slingo, chief scientist at the Met Office, said:
The trend towards more extreme rainfall events is one we are seeing around the world, in countries such as India and China, and now potentially here in the UK.
Much more research is needed to understand more about the causes and potential implications.
It is essential we look at how this may impact our rainfall patterns going forward over the next decade and beyond, so we can advise on the frequency of extreme weather in the future and the potential for more surface and river flooding.
It's official, 2012 was the second wettest year on record for the UK.Read the full story ›