Rhybudd Oren am Dywydd Eithafol / Amber Extreme Weather Warning

Mae disgwyl tymheredd uchel dros y penwythnos a dechrau'r wythnos nesaf. Mae tywydd poeth yn gallu cynyddu perygl diffyg hylif a thrawiad gwres. Mynnwch gyngor ar sut i gadw'n oer gan Iechyd Cyhoeddus Cymru.
High temperatures are expected for the next few days. Hot weather can increase your risk of dehydration and heatstroke. Get advice on how to stay cool from Public Health Wales.

Further information available