ASTRONOMY WEATHER FORECAST
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London

This forecast is updated at 7am, 1pm and 7pm

Issued by Weather Consultancy Services on:
Wednesday 17 August 2022 03:00 hrs
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UK & Ireland Weather Summary for Wednesday
Fronts drape across southern areas of Britain bringing heavy and thundery showers to some here. Meanwhile, ridging high pressure sees dry weather and sunny spells across the rest of the country though cloud will build in the west in advance of an area of low pressure moving in.


Forecast for astronomy in London for the next 5-days
Data based on GFS model updated: Wed 17 August 2022 03:00
Time SFC Wind Rain * Total cloud Low cloud Med cloud High cloud Temp Sfc RH Pressure Seeing Clarity
6am WednesdayNE 7g15mph0.4mm45.4%0%5%5%18C81%1010mb43
9am WednesdayNE 6g11mph0.2mm5%5%5%5%23C58%1011mb45
Midday WednesdayNE 6g12mph2.6mm93%27.5%93%93%24C59%1011mb41
3pm WednesdayNE 6g12mph5.3mm98.2%17.2%63.1%63.1%22C69%1012mb40
6pm WednesdayNE 6g11mph7.8mm99.3%28.5%18.3%18.3%21C77%1012mb40
9pm WednesdayNE 3g18mph0.8mm57.3%57.3%0.7%0.7%19C85%1014mb13
00:01am ThursdayN 2g16mph0.9mm37.3%37.3%1%1%18C90%1015mb14
6am ThursdayS 1g7mph0mm33.3%32.7%0%0%17C90%1015mb24
Midday ThursdaySW 6g3mph0mm25.4%23%5.5%5.5%25C49%1014mb44
6pm ThursdayW 7g12mph0mm100%93.1%5.9%5.9%25C49%1013mb40
00:01am FridaySW 4g11mph0mm100%5.9%100%100%20C66%1014mb40
Midday FridayW 7g13mph0.1mm0.6%0.6%0%0%25C41%1015mb45
Midday SaturdayW 12g17mph0mm100%100%0%0%23C43%1017mb40
00:00am SundayW 4g19mph0mm100%0%100%100%18C68%1017mb20
Midday SundayW 9g17mph0.7mm100%100%5%5%17C74%1017mb40
00:00am MondaySE 1g6mph0mm82.6%81.5%0%0%19C56%1015mb41
Midday MondayS 5g11mph0mm82.1%82.1%55%55%23C43%1013mb41
[* rainfall is previous 6-hours. Gusts are over open ground.]


Planning outlook:
Tuesday low pressure and a cold front will move south across England and Wales with high pressure north west of Scotland. A colder day as rain and snow spreads south. Mainly dry in the channel with sunny spells. Visibilities will be good in the channel but moderate to poor elsewhere in rain and snow.
Wednesday a cell of high pressure is centered west of Ireland and will be ridging east. A cold, windy day with sunny spells and scattered showers of rain and snow. Visibilities will be good but moderate in rain showers, poor in snow showers.
Thursday sees high pressure centred south of Ireland and this will give much of the country a dry, settled, day with sunny spells. Visibilities will be good.
Friday a cold front spreads rain down across Scotland, the Irish Sea and northern England. Fair and dry in the south and in the channel with varying cloud and sunny spells. Visibilities will be good in the south and in the channel, but falling to moderate or locally poor as the rain sets in across the north.
Saturday high pressure to the west of Britain is ridging into Scotland with a front into the far north west. Most areas will be fair and dry with sunny spells today after some patchy mist clears. Visibilities will be good but moderate at first.
Sunday a front moves south east across Britain. Outbreaks of rain will clear western areas in the afternoon. Visibilities will be moderate improving to good as the front clears.



Synoptic charts based on data from 0001 GMT, Wednesday 17 August 2022 (Updated daily by 9am)
Tomorrow (Day 2)

Day after tomorrow (Day 3)

This forecast is for planning purposes only.
Forecast is copyright Weather Consultancy Services.