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Rhybuddion

Sul 26 Mawrth Cyhoeddwyd am 07:59

Rhybuddion DU

Rhybudd Tywydd

Cyhoeddwyd gan y Swyddfa Dywydd

Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

Sunday 26 March

There are no weather warnings in force anywhere in the United Kingdom.

Rhybudd Llifogydd

Rhybudd gan Asiantaeth yr Amgylchedd neu gan SEPA yn yr Alban a Chyfoeth Naturiol Cymru yng Nghymru

Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

Sunday 26 March

There are no flood warnings in force anywhere in the United Kingdom.

Ynglŷn â Rhybuddion Tywydd y Swyddfa Dywydd

Mae’r Swyddfa Dywydd yn rhybuddio’r cyhoedd a’r rhai sy’n ymateb i argyfyngau o dywydd garw ac enbyd a allai fod yn beryglus i fywyd neu a allai gael effaith eang, drwy’r Gwasanaeth Rhybudd Tywydd Garw Cenedlaethol (NSWWS).

Mae’r Swyddfa Dywydd yn darparu rhybuddion am law, eira, gwynt, niwl a rhew. Bydd lliw yn cael ei roi i bob rhybudd, yn dibynnu ar gyfuniad o debygrwydd hyn yn digwydd a’r effaith gallai ei gael.

Am fwy o wybodaeth, darllenwch Ganllaw Rhybuddion Tywydd y Swyddfa Dywydd (dolen Saesneg).

Ynglŷn â Rhybuddion Llifogydd

Mae’r rhybuddion llifogydd yn cael eu cyhoeddi gan Asiantaeth yr Amgylchedd, Scottish Environment Protection Agency a Chyfoeth Naturiol Cymru, a’u hanfon at Ganolfan Dywydd y BBC. Yna rydyn ni'n cyhoeddi crynodeb o rybuddion wedi eu seilio ar y wybodaeth ddiweddaraf 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 chi ddarganfod os yw eich ardal chi mewn perygl o lifogydd. Mae Asiantaeth yr Amgylchedd, Scottish Environment Protection Agency a Chyfoeth Naturiol Cymru yn diweddaru eu rhybuddion 24 awr y dydd trwy rif Floodline.

Floodline - 0345 988 1188

Rhagolwg Misol

Llun 27 Mawrth Cyhoeddwyd am 10:00

Rhagolwg Misol

Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

Crynodeb
Will April be sunny or is that a foolish thought?

We had a real taste of spring this weekend with British Summer Time starting off on an appropriately sunny note. However, spring is a season of big changes: April showers, strong sunshine, chilly nights, warm days - we'll probably see it all over the next few weeks.

Llun 27 Mawrth—Sul 9 Ebrill
Will the sunshine last?

After a warm and settled weekend dominated by high pressure, the coming week's weather pattern looks a little more mobile. We'll start the week on a mostly dry note but heavy showers will push up from the south during Tuesday, followed by a rather wetter and windier theme for the end of the week. Temperatures will remain warmer than average though, with a few spots across eastern England reaching the high teens. By the weekend, high pressure will try to re-establish itself leaving sunshine and showers for most.

Llun 3 Ebrill—Sul 16 Ebrill
A north-west / south-east split.

As we head through the first full week of April it should turn drier and brighter across the south and east of the UK as high pressure returns. However, it will probably remain on the wet and windy side across parts of Scotland, Northern Ireland and northern England. Temperatures should be slightly above average for many, and quite warm across south-eastern England.

Llun 10 Ebrill—Sul 30 Ebrill
What about the rest of April?

Moving through April, a good deal of dry, settled weather is likely, especially for southern parts of the UK, with a more unsettled picture further north and west. Some wet and windy weather may well make it across the UK at times but such spells are likely to be short-lived. It looks as though it will stay warm too, although frosts may become a little more commonplace later in the month.

Wythnos nesaf

March wasn't especially windy, but will April's showers bring forth May flowers? Find out next week.

Rhagolygu Misol
Mae rhagolygu’r tywydd hirach nag wythnos ymlaen llaw yn her i hyd yn oed yr arbenigwr tywydd mwyaf profiadol. Mae modelau rhagolwg rhifiadol y tywydd gan y 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 dyfalu sut dywydd fydd yn effeithio ar y DU.

Diweddariad nesaf am 10:00, Llun 3 Ebrill

Crynodeb

Llun 27 Mawrth Cyhoeddwyd am 04:32

Crynodeb

Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

Dry today with sunshine for many. Becoming unsettled this week.
Today

Patchy fog and frost will clear readily this morning, to leave another fine and mostly sunny day. Some parts will however see more cloud that at the weekend, particularly across central and eastern areas. Feeling warm again in the sunshine.

Tonight

Staying dry but turning chilly with clear spells, particularly across western Scotland and parts of southern England and Wales. Elsewhere cloudier with some mist and fog, especially across the north-east.

Tuesday

Becoming cloudier with showery outbreaks of rain spreading across many western and central parts, perhaps turning heavy and thundery. Some sunshine as well and feeling notably warmer in the east.

Outlook for Wednesday to Friday

Turning more unsettled, particularly in the north and west with showers or longer spells of rain, interspersed with some warm sunshine. Breezier for most, particularly on Wednesday and Thursday.

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