Rhagolwg 10 diwrnod

Diweddarwyd 15:05

Codiad haul 08:00

Machlud haul 16:23

Trosolwg dydd



Uchel C 46°F Isaf C 36°F

Ysbeidiau Heulog

Cyflymder gwynt 15 mya 24 km/a Gorllewinol

Rhagolwg amgylcheddol

  • UV Isel
  • Llygredd Isel

Rhagolwg bob awr

London and South East England

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


A cold day, with a strong wind giving a significant wind chill. There will be sunny spells but also showers in places, most likely in the west. These may turn to sleet, or perhaps snow, later in the day.


Windy and cold with scattered showers, most frequent in the west, giving some sleet and snow, mainly on hills although perhaps to lower levels for a time, and icy stretches.

Rhybuddion gan y Swyddfa Dywydd ar gyfer Greater London

  1. Rhybudd melyn o wynt

    Diweddarwyd ar 16 Ionawr am 11:39
    2100 ar Mer 17 Ionawr
    1100 ar Iau 18 Ionawr

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

    Very strong winds will affect parts of the UK during Wednesday night and into Thursday. The strongest winds are expected to transfer eastwards across the warning area before clearing by late 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, with the potential to affect other services, such as mobile phone coverage. 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.


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

Cyhoeddwyd gan y Swyddfa Dywydd