Changeable weather is expected through the week with the risk of showers or longer spells of rain in all regions but also drier spells. During the first half of the week it could become warm or very warm for a time in the south and especially the south east. There is uncertainty about the extent of the warm up due to cloud cover and the possibility of thundery rain on Wednesday. If the cloud breaks sufficiently temperatures could climb to 25C (77F) or slightly higher locally on Wednesday. Through the second half of the week cooler air is expected to return from the west and most regions will see some showers or longer spells of rain at times. Forecast confidence is moderate to high on the general pattern, but very low on the details.
A mixed week is expected. In southern regions some showery rain is likely at times, but there should be more emphasis on drier and brighter spells. In the north and west the opposite is the case, with a greater risk of showers or longer spells of rain continuing through the week. Confidence on developments is very low so keep up to date by using the place or postcode forecasts.
During the first half of the first week much warmer is likely to push into the south east from the continent. However, it doesn't look like being particularly settled with pressure remaining low. Through the second week the mixed picture is expected to continue with pressure possibly building from the Azores. This would give the best chance of drier weather to the south of Britain.
Global Forecast System (GFS) analysis
The GFS is the computer model which we base our 16 day weather forecasts on.
Points of note
It could become very warm for a time during the middle of the first week, but there may well be quite a lot of cloud around. Have you taken a look at our chart viewer page
? This shows output from the GFS, GEFS, ECM and WW3 computer models as well as the Met Office fax charts and provides great support for tablet computers such as the iPad.