Gosodiadau
Iaith
Rhagolwg Dyddiol
Diwrnod Y Tywydd Tymheredd Uchaf Diwrnod Tymheredd Nos Isaf Cyfeiriad y Gwynt a Chyflymdra
Gwener

Ysbeidiau Heulog

7°C 45°F 2°C 36°F Gorllewin Gogledd Orllewinol
23km/h 14mph
Sadwrn

Cwmwl ysgafn

6°C 43°F 2°C 36°F Gogledd Gogledd Orllewinol
29km/h 18mph
Sul

Ysbeidiau Heulog

5°C 41°F 0°C 32°F Gogledd Orllewinol
29km/h 18mph
Llun

Cwmwl ysgafn

4°C 39°F 0°C 32°F Gogledd Gogledd Orllewinol
13km/h 8mph
Mawrth

Eirlaw

4°C 39°F -1°C 30°F Gogledd Gogledd Ddwyreiniol
24km/h 15mph

IN ASSOCIATION WITH

Rhagolwg

Codiad haul 07:55 Machlud haul 16:59

Diweddarwyd 08:28

Manylion rhagolwg tywydd ar gyfer Gwener 30 Ionawr. Mae pob colofn yn cynnwys manylion rhagolygon y tywydd bob awr ar gyfer cyflyrau, tymheredd, cyflymder y gwynt cyfeiriad y gwynt, lleithder, pwysau a gwelededd.
Amser 1200 hours1500 hours1800 hours2100 hours0000 hours
Sad
0300 hours  
Amodau Tywydd Cawod o law ysgafn Ysbeidiau Heulog Wybren Glir Wybren Glir Wybren Glir Glaw ysgafn   
Tymheredd (°C/°F) 5°C 41°F 6°C 43°F 4°C 39°F 3°C 37°F 2°C 36°F 3°C 37°F   
Cyflymder Gwynt (mph/km/h) 23km/h 14mph Gorllewin Gogledd Orllewinol 23km/h 14mph Gogledd Orllewinol 21km/h 13mph Gorllewin Gogledd Orllewinol 21km/h 13mph Gorllewin Gogledd Orllewinol 24km/h 15mph Gorllewin Gogledd Orllewinol 26km/h 16mph Gorllewin Gogledd Orllewinol   
Cyfeiriad Gwynt WNW NW WNW WNW WNW WNW   
Lleithder 87% 69% 77% 81% 85% 88%   
Gwelededd (Rh=Rhagorol, DI=Da iawn, D= Da, C = Cymedrol, G= Gwael, GI =Gwael iawn) C DI DI DI DI DI   
Gwasgedd (Milibariau) 983 982 982 981 981 981   

Wales

Crynodeb Rhagolwg

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

  • Today

    A chilly start this morning, and another cold feeling day. There will be a scattering of wintry showers, but snow mainly confined to hills, with sleet or rain at lower levels.

  • Tonight

    Further wintry showers overnight, becoming increasingly heavy and widespread through the early hours. Sleet or snow may fall to low levels at times. Some icy stretches are likely by dawn.

Rhagolwg Amgylcheddol

UV: 1

Ystod DU: 1-7

Llygredd: Isel

Ystod DU: Isel i Uchel Iawn

Rhybuddion gan y Swyddfa Dywydd ar gyfer: Vale of Glamorgan

  1. Rhybudd melyn o eira

    O:
    1500 ar Iau 29 Ionawr
    Tan:
    1100 ar Gwe 30 Ionawr
    Diweddarwyd ar 29 Ionawr am 10:43 Mewn grym

    Warning

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

    Showers during Thursday afternoon and evening are expected to fall increasingly as sleet, snow and hail. This may settle in places, especially from late afternoon and more especially on high ground. In addition, a more persistent spell of rain, sleet and and snow may affect the west and south of the yellow area during the early hours of Friday morning. Most areas are unlikely to see large amounts of snow but icy stretches are likely to form on untreated surfaces.

    The public should be aware of the risk of some travel disruption and difficult driving conditions.

  2. Rhybudd melyn o rew

    O:
    1500 ar Iau 29 Ionawr
    Tan:
    1100 ar Gwe 30 Ionawr
    Diweddarwyd ar 29 Ionawr am 10:43 Mewn grym

    Warning

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

    Showers during Thursday afternoon and evening are expected to fall increasingly as sleet, snow and hail. This may settle in places, especially from late afternoon and more especially on high ground. In addition, a more persistent spell of rain, sleet and and snow may affect the west and south of the yellow area during the early hours of Friday morning. Most areas are unlikely to see large amounts of snow but icy stretches are likely to form on untreated surfaces.

    The public should be aware of the risk of some travel disruption and difficult driving conditions.

  3. Rhybudd cynnar melyn o eira

    O:
    0015 ar Sul 1 Chwefror
    Tan:
    2345 ar Llu 2 Chwefror
    Diweddarwyd ar 29 Ionawr am 11:32

    Alert

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

    Further snow showers will affect parts of Scotland and Northern Ireland on Sunday leading to some locally large accumulations and the showers may spread along eastern and western coasts of England and Wales. The showers will be associated with strong winds so drifting and temporary blizzard conditions are possible as well as icy stretches. The public should be aware of the potential for disruption from these conditions.

    Snow showers are likely to continue to affect similar areas into Monday bringing further accumulations. Meanwhile, there is a risk of a more persistent spell of rain, sleet and snow affecting Wales, the Midlands and southwest England on Monday. This alert has therefore been extended into Monday and now covers these additional areas, but this is more uncertain and therefore further updates are likely in the coming days.

Mae rhestr llawn y Rhybuddion yn y DU ar dudalen Mwy am Dywydd y DU.

Allwedd

  • Coch: Gweithredwch
  • Ambr: Byddwch yn barod
  • Melyn: Byddwch yn ymwybodol

Cyhoeddwyd gan y Swyddfa Dywydd

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Fideo Rhagolwg

BBC Wales Today

Rhagolwg BBC Wales Today Diweddarwyd 06:18, Gwener 30 Ion Rhagolwg wedi’i ddiweddaru o Ddydd Llun i Ddydd Gwener yn unig Mae’r fideo yma ar gael yn Saesneg yn unig.

UK

Rhagolwg UK Diweddarwyd 00:13, Gwener 30 Ion Mae’r fideo yma ar gael yn Saesneg yn unig.

Arsylwadau

Arsylwyd am 08:00, Gwener 30 Ionawr

Heulog

3°C 37°F

16km/h 10mph Gorllewinol

Lleithder: 77%

Gwelededd: Da iawn

Gwasgedd: 983mb, Codi

Gorsaf Arsylwi: St. Athan

(Lledred: 51.4 | Hydred: -3.433)

BBC Tywydd mewn cydweithrediad gyda'r Swyddfa Dywydd

Mae'r holl amseroedd yn GMT (Europe/London, GMT+0000) onibai y dywedir yn wahanol

Rhown wybodaeth sydd mwyaf addas ar gyfer lleoliad y rhagolwg. Ewch i'r Cwestiynau Cyffredin am fanylion.