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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

Sul 19 Mawrth Cyhoeddwyd am 10:00

Rhagolwg Misol

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

Crynodeb
March goes in like a lion, out like a lamb?

It was an unsettled start to the month in the wake of Storm Doris and Ewan at the end of February. Throughout the month we have seen some spells of wet and windy weather at times. However, high pressure looks set to bring a more settled spell of weather to parts of the UK towards the end of the month, but with that, we could see a greater risk of some overnight frosts.

Sul 19 Mawrth—Sul 26 Mawrth
The last throes of winter?

After a mild weekend, particularly in the south, we will see a switch to some colder but potentially brighter weather early in the week. We are likely to see some snow, particularly over the hills, with some widespread overnight frosts. As the week progresses there will be some more unsettled, wet weather with temperatures recovering slightly. But, later in the week we may see high pressure toppling in. It's the north that will benefit the most with drier weather but the added risk of some overnight temperatures plummeting.

Sul 26 Mawrth—Sul 2 Ebrill
High pressure a flash in the pan?

Settled weather will probably continue in the north at first, with damper weather in southern counties. This later spreading further north with a return to more normal, westerly prevailing conditions and some wet and windy weather likely at times. There are some weak signals that the high pressure may dig in its heels and continue to dominate the pattern, meaning a low probability of further settled weather.

Sul 2 Ebrill—Sul 9 Ebrill
What does April have in store?

Signals are weak, but the favoured scenario is for a more settled start to April with blocked weather patterns most likely bringing drier than average weather to the UK. This could all change though, depending on how stubborn any high pressure behaves in the run up to April.

Wythnos nesaf

With some cold and wintry weather at the start of the week, will we see spring establish itself after the equinox? Check here for updates!

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, Sul 26 Mawrth

Crynodeb

Sul 26 Mawrth Cyhoeddwyd am 03:44

Crynodeb

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

Dry, sunny and warm again today. Turning unsettled next week.
Today

Any patchy fog or low cloud quickly clearing this morning to leave another fine, dry and warm day. Long sunny periods for most, although skies may be cloudier across the Northern Isles. Breezy along southern coasts.

Tonight

Mainly clear skies in the north and west overnight, with some isolated frost and fog patches. However, skies turning cloudier in parts of the east with some hill fog.

Monday

Another warm day on Monday, but cloudier than during the weekend. Sunshine still developing for many, especially across Scotland and the south,, but staying rather cloudy across the north-east.

Outlook for Tuesday to Thursday

Staying warm. Dry for many on Tuesday with sunny spells and some showers in the south-west. Turning unsettled from the west by Wednesday, but staying mostly dry across the south-east.

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Diweddarwyd 08:51 BST, Dydd Sul 26 MawMae’r fideo yma ar gael yn Saesneg yn unig.