Y Drenewydd

Rhagolwg 10 diwrnod

Diweddarwyd 07:34

Codiad haul 08:14

Machlud haul 16:34

Trosolwg dydd



Uchel C 41°F Isaf C 34°F

Cawod o law trwm

Cyflymder gwynt 17 mya 27 km/a Gorllewinol

Rhagolwg amgylcheddol

  • UV Isel
  • Llygredd Isel

Rhagolwg bob awr


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


An icy start for some in the north with sleet or snow in places. It will be windy, though this will ease through the day. There will be sunny spells and frequent wintry showers, some turning heavy at times.


Wintry showers will continue overnight, most frequent and heavy across northern and western parts. Otherwise it will be dry and cold, with frost and ice in places.

Rhybuddion gan y Swyddfa Dywydd ar gyfer Powys

  1. Mewn grym

    Rhybudd melyn o wynt

    Diweddarwyd ar 18 Ionawr am 02:53
    0255 ar Iau 18 Ionawr
    0900 ar Iau 18 Ionawr

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

    Very strong winds will affect parts of the UK early on Thursday. The strongest winds are expected to transfer eastwards across the warning area, before clearing by mid-morning.

    Road, rail and ferry services may be affected, with longer journey times and cancellations. There is also a possibility that some bridges may close. Power cuts may occur, and there is the potential for other services, such as mobile phone coverage, to be affected. Injuries and danger to life from flying debris are possible, along with some damage to buildings.In addition, large waves are expected to affect some western coasts with beach material being thrown onto sea fronts, coastal roads and properties.

    This is an update to the warning, to increase the southward extent.


  • Melyn:
    Byddwch yn ymwybodol
  • Ambr:
    Byddwch yn barod
  • Coch:
  • Glaw
  • Gwynt
  • Eira
  • Rew
  • Niwl

Cyhoeddwyd gan y Swyddfa Dywydd