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Dod o hyd i Ragolwg
Hoff Leoliadau (—)
Y Deyrnas Unedig
Rhybuddion
Sadwrn 25 Mai Cyhoeddwyd am 02:02
Rhybuddion DU
Mae'r cynnwys hwn ar gael yn Saesneg yn unig.
Rhybudd Tywydd
Saturday 25th May
There are no weather warnings currently in force.
Valid until further notice.
Rhybudd Llifogydd
Saturday 25th May
There are no flood warnings currently in force anywhere in the United Kingdom.
Further updates will appear here.
Am Rybuddion Tywydd y Swyddfa Dywydd
Mae BBC Tywydd yn darparu dau fath o rybuddion tywydd a ddosbarthwyd gan y Swyddfa Dywydd: Rhybuddion a Rhybuddion cynnar.
Pan disgwylir tywydd garw, bydd Rhybuddion yn cael eu cyhoeddi o fewn y 24 awr nesaf.
Bydd Rhybuddion cynnar yn cael eu cyhoeddi mwy na 24 awr o flaen tywydd garw.
Mae yna dri categori o ddigwyddiad: Coch, Ambr a Melyn-y mwyaf difrifol yw Coch.
Mae Rhybudd a Rhybudd Cynnar sydd â'r un lliw yr un mor ddifrifol ond wedi eu darogan i gyrraedd ar adegau gwahanol. Felly, y gwahaniaeth rhwng Rhybudd Coch a Rhybudd Coch Cynnar yw amseriad y digwyddiad.
Pan mae rhybudd mewn grym, ceir gwybodaeth manwl ar Rybuddion Tywydd y Swyddfa Dywydd.
Am Rybuddion Llifogydd yr Asiantaeth Amgylchedd
Cyhoeddwyd y Rhybuddion Llifogydd gan yr Asiantaeth Amgylchedd ac Asiantaeth Gwarchod Amgylchfyd yr Alban a danfonwyd nhw i Ganolfan Dywydd y BBC. Rydym ni'n cyhoeddi crynodeb o rybuddion wedi eu seilio ar y gwybodaeth diweddaraf sydd ar gael. Pan mae rhybuddion llifogydd difrifol yn cael eu rhyddhau, bydd rhain yn cael pwyslais ar ddarllediadau Teledu.
Dysgwch mwy am Rybuddion Llifogydd
Mae yna nifer o ffyrdd y gallwch ddarganfod os mae'ch ardal chi mewn perygl o orlifo. Mae'r Asiantaeth Amgylchedd (ar gyfer Lloegr a Chymru) ac Asiantaeth Gwarchod Amgylchfyd yr Alban yn diweddaru eu rhybuddion 24 awr y dydd trwy rif.
Floodline - 0845 988 1188
Rhagolwg Misol
Llun 20 Mai Cyhoeddwyd am 10:00
Rhagolwg Misol
Mae'r cynnwys hwn ar gael yn Saesneg yn unig.
Crynodeb
Cool start and with no real signs of summer
A rather cool and mainly unsettled picture looks like dominating the United Kingdom over the next couple of weeks.
It won't be all doom and gloom though, as there will be some drier and warmer weather at times, especially as we head into June.
Llun 20 Mai—Sul 26 Mai
Turning cooler
This week high pressure sits to the west of the UK with low pressure developing in the North Sea. The "squeeze" between the two will cause winds to funnel down from a northerly direction, causing the reasonably warm conditions at the beginning of the week to turn increasingly cool, with temperatures falling below the late May average. It's possible for a time later in the week that we may see sufficiently cold air being dragged down from the north for snow over the Scottish mountains, and nights may be cold enough for a touch of ground frost.
At the same time the low pressure in the North Sea will mean windy, showery conditions will often affect eastern areas during the second half of the week. Western locations will be more likely to experience dry and bright weather.
Conditions for many of us will improve for the weekend though. A ridge of high pressure across England and Wales will keep the weather mostly settled and fairly warm by day, although chilly by night. Scotland and Northern Ireland will be cloudier, breezier and cooler with some rain at times.
Llun 27 Mai—Sul 2 Mehefin
An unsettled end to spring
As a new month and new season loom, there's not a great deal of change to the unsettled theme, with temperatures staying a little below average.
It looks like the cool, mainly northerly flow and unsettled picture will continue to the end of May, with further showers or longer spells of rain, especially in the east. This includes Bank Holiday Monday, which will see wind and rain moving in from the west, replacing the fine weather of the weekend.
Again, there will be some drier, sunnier weather to enjoy, and in the sun it will feel pleasantly warm, given how high and strong the sun is at this time of the year. Perhaps the best of the drier weather will once again be found towards more western and southwestern parts of the UK.
As we move into June, there is a small chance that winds may start to swing to westerlies. Should this happen it would allow temperatures to return to more typical values for the time of year. However, the most likely scenario at this stage is of further cooler weather, with showers or longer spells of rain.
Llun 3 Mehefin—Sul 16 Mehefin
Any signs of summer?
Heading into the first part of June, there are currently few signs of any great change in the weather. The majority of the longer range forecast data suggest the likelihood of a pressure build to the west of the UK, consequently bringing a cool northeasterly flow across the UK, with further showers.
Although temperatures may be a little below the average for June, it should still feel warm in any brighter spells but cooler around the coasts where sea breezes develop by day.
Wythnos nesaf
The late May bank holiday looks likely to bring a short spell of slightrly warmer weather for many, but can June provide us with some more lasting seasonal weather?
Rhagolygu Misol
Mae'r tywydd y tu hwnt i'r wythnos i ddod yn herio hyd yn oed yr arbenigwr tywydd mwyaf profiadol. Mae modelau rhagolwg rhifiadol y tywydd o'r Swyddfa Dywydd a'r Ganolfan Ewropeaidd ar gyfer Rhagolygon Tywydd Ystod-Canolig (ECMWF) yn cael eu rhedeg nifer o weithiau'r mis (a'r tymor) i ddod, er mwyn creu darlun o'r tebygoliaeth o'r gwahanol fathau o dywydd fydd yn effeithio'r DU.Crynodeb
Sadwrn 25 Mai Cyhoeddwyd am 03:31
Crynodeb
Mae'r cynnwys hwn ar gael yn Saesneg yn unig.
A drier, brighter and warmer day. Rain in northwest later.
Today
Mostly dry and bright with sunny periods, though some rain in northwest Scotland and parts of Northern Ireland, and cloudier at times in southeast England. Much warmer than Friday with lighter winds.
Tonight
Remaining clear, cold and dry across much of the country with a grass frost developing in rural spots. Rain will spread further into Northern Ireland and Scotland.
Sunday
Cool and cloudy across Scotland and Northern Ireland with outbreaks of rain, but some brightness later. Drier and brighter elsewhere with good spells of warm sunshine. Light winds.
Outlook for Monday to Wednesday
Rain spreading gradually from the west through Monday. Staying unsettled thereafter with heavy showers or longer periods of rain, but also some brightness with temperatures returning below normal.
