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Rhybuddion

Iau 30 Mawrth Cyhoeddwyd am 00:35

Rhybuddion DU

Rhybudd Tywydd

Cyhoeddwyd gan y Swyddfa Dywydd

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

Thursday 30 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.

Thursday 30 March

There is a flood warning in force in the following region;

WALES (1)

Further updates will appear here.

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 2 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 9 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 23 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

Iau 30 Mawrth Cyhoeddwyd am 03:33

Crynodeb

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

Cloud and rain north and west. Very warm for some.
Today

A mild, cloudy start with outbreaks of rain and a brisk breeze in many northern and western parts. Increasing amounts of sunshine, though often hazy, in south-east England and eastern Scotland, where it will be very warm later.

Tonight

Another mild, frost free night, with further outbreaks of rain in many northern and western parts which will turn heavy at times. Clear spells for parts of the south-east.

Friday

Heavy, steady rain across Northern Ireland and western Scotland through the morning. A mostly dry, cloudy start elsewhere. Then sunny spells with showers in the west. Less warm than Thursday.

Outlook for Saturday to Monday

Saturday cooler with sunshine and showers, and a risk of frost overnight. Sunday fine and dry, feeling warm in sunny spells. Monday breezy with rain in the north and west.

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