The Met Office has issued severe weather warnings for parts of England and Wales, as heavy rains are predicted to hit some areas.
People are urged to "be aware" of the possibility of severe weather in several regions across Great Britain, including: Northern Ireland, Wales, West Midlands, South-West England, London and South-East England.
Areas likely to be hit the hardest by the extreme weather are Cornwall, West Devon, Pembrokeshire and Northern Ireland, according to the Met Office, which said there could also be the possibility of some flooding.
The weather service's website said: "Periods of heavy rain, accompanied at times by strong winds, will affect parts of western Britain during Monday.
"The public should be aware that quantities of rain may be sufficient in a few places to disrupt travel and give rise to localised flooding.
"In Northern Ireland the heaviest rain is expected to arrive later in the day."
Many regions are likely to see 30-60mm of rain, and in some torrential downpours could bring more than 100mm, the Met Office website said.
"Presently the most vulnerable areas look to be Cornwall, West Devon, Pembrokeshire and the whole of Northern Ireland.
"In Wales and Southwest England the heaviest rain is likely to fall during daylight hours, in Northern Ireland it is more likely to be in the evening.
"Gusts exceeding 50mph may exacerbate any problems, by leading to leaves and other minor debris blocking drains."