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

Issued by Weather Consultancy Services on:
Tuesday 21 May 2024 03:00 hrs
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UK & Ireland Weather Summary for Tuesday
A slack pressure flow through the country on Tuesday. Pressure is generally low. Trough through Ireland and eastern England with further trough in northern France, moving west.

Forecast for astronomy in London for the next 5-days
Data based on GFS model updated: Tue 21 May 2024 03:00
Time SFC Wind Rain * Total cloud Low cloud Med cloud High cloud Temp Sfc RH Pressure Seeing Clarity
6am TuesdayNE 2g11mph0mm100%71.5%100%100%12C84%1009mb20
9am TuesdayNE 2g8mph0mm100%100%100%100%13C86%1009mb30
Midday TuesdayNE 3g5mph0.1mm100%99.7%100%100%15C81%1009mbN/A0
3pm TuesdayNE 3g4mph0.3mm100%92.3%100%100%15C81%1009mbN/A0
6pm TuesdayNW 2g3mph0.8mm100%55.2%100%100%15C85%1008mb40
9pm TuesdayNW 2g8mph0.8mm100%62.5%100%100%13C97%1008mb40
00:01am WednesdayNW 3g2mph1.2mm100%99.1%100%100%13C97%1007mb40
6am WednesdayW 3g18mph1.7mm100%100%49.6%49.6%12C98%1005mb10
Midday WednesdayW 8g24mph1mm100%100%100%100%13C90%1006mb30
6pm WednesdayW 9g25mph0.7mm100%100%89.8%89.8%14C79%1008mb30
00:01am ThursdayW 11g22mph0.1mm98.1%62.3%74.5%74.5%13C89%1011mb40
Midday ThursdayNW 8g13mph0mm100%91.5%100%100%15C62%1016mb40
Midday FridayNE 1g4mph0mm100%6.2%100%100%17C40%1020mb30
00:00am SaturdayNW 1g4mph0.2mm25.5%12.7%6.4%6.4%11C88%1021mb34
Midday SaturdaySW 4g5mph0.1mm100%13.9%3.5%3.5%19C41%1021mb40
00:00am SundayS 3g7mph0mm100%0%99.9%99.9%12C74%1024mb40
Midday SundaySW 5g9mph0mm81.6%59.3%79.9%79.9%20C49%1025mbN/A1
[* 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, Monday 20 May 2024 (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.