Trefynwy

Rhagolwg 10 diwrnod

Diweddarwyd 06:08

Codiad haul 05:01

Machlud haul 21:16

Trosolwg dydd

Heddiw

,

Uchel 20°C 68°F Isaf 10°C 50°F

Cwmwl ysgafn

Cyflymder gwynt 6 mya 10 km/a Gogledd Ddwyreiniol

Rhagolwg amgylcheddol

  • UV Cymedrol
  • Paill Cymedrol
  • Llygredd Cymedrol

Rhagolwg bob awr

Wales

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

Today

The morning will start rather cloudy in most areas with the chance of a shower. Some warm spells of sunshine will develop, although scattered heavy and thundery showers are also expected during the afternoon, especially in the south and west.

Tonight

Showers will ease and become more isolated overnight, leaving many parts of the country dry. Some clear spells will develop, along with patches of low cloud and mist.

Rhybuddion gan y Swyddfa Dywydd ar gyfer Monmouthshire

  1. Rhybudd melyn o law

    Diweddarwyd ar 27 Mai am 10:24
    O:
    1200 ar Sad 28 Mai
    Tan:
    2100 ar Sad 28 Mai

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

    Although some places will remain dry during Saturday, scattered heavy showers and thunderstorms are likely to develop through the afternoon and continue into the evening in places, so be aware of the potential for localised surface water flooding, whilst lightning and hail will also be additional hazards for travel and outdoor activities.

Allwedd

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

Cyhoeddwyd gan y Swyddfa Dywydd