Here is a summary of the latest NWP output for noon (GMT) on Saturday. Issued 0350z, 8/08/12.

ECMWF: http://www.wetterzentrale.de/pics/Recm1201.gif
A trough covers Ireland, leading to ESE'lies over the UK. The trough moves northwards and fills on day 6. By day 7 pressure builds to the NE and southerlies cover the UK. Southerlies and SE'lies affect the UK on day 8 as the high continues to build, then on day 9 low pressure moves ESE'wards along the English Channel. Day 10 sees     a trough over Scotland and Northern Ireland with westerlies elsewhere.

MetO: http://www.wetterzentrale.de/pics/Rukm1201.gif
The MetO run brings a col for all areas except Scotland, which lies under SE'lies. The col persists on day 6.

GFS: http://www.wetterzentrale.de/pics/Rtavn1201.png
A trough covers Wales and SW England, resulting in ESE'lies elsewhere. On day 6 the trough moves northwards and fills. England and Wales effectively lie under a col with light winds, while the rest of the UK lies under SE'lies. Stronger SSE'lies move eastwards on day 7 as low pressure deepens to the west. A weak trough crosses the UK on day 8 and on day 9 it fills, leaving light southerlies. There are light to moderate SSW'lies on day 10, with low pressure persisting to the west.

GEM: http://www.wetterzentrale.de/pics/Rgem1201.gif
GEM shows ESE'lies with a low to the SW.

JMA: http://www.wetterzentrale.de/pics/Rjma1201.gif
The Japanese run shows a low to the SW and easterlies for the UK.

In summary, Sunday will see ESE'lies over the UK as a trough or shallow low approaches from the SW. The trough will fill as it moves NE'wards on Monday, with rain fizzling out as it heads northwards. Thereafter southerlies or SSE'lies look likely for a couple of days, with temperatures generally at or above average.

Cheers Darren

Cheers Darren.

Thanks Darren