Gall fod effeithiau sylweddol ar seilwaith trafnidiaeth yng Nghymru yn ystod y cyfnod o wres eithafol, gan gynnwys ffyrdd a rheilffyrdd. Dylai teithwyr gynllunio ymlaen llaw a sicrhau bod ganddynt ddigon o ddŵr. Bydd y gwres yn golygu bod cerbydau'n fwy tebygol o dorri i lawr ar ffyrdd ac fe allai roi straen hefyd ar y rhwydwaith rheilffyrdd. Gallai’r ddau beth hyn arwain at darfu ac oedi wrth deithio. Dylai teithwyr holi eu gweithredwr trenau neu fysiau, Traffig Cymru neu Traveline Cymru i gael gwybod am unrhyw darfu ac i newid eu cynlluniau teithio yn unol â hynny.Ysgolion a gofal plant
There may be significant impacts on transport infrastructure in Wales during the period of extreme heat, including road and rail. Travellers should plan ahead and ensure they have plenty of water. The heat will mean that vehicles are more likely to break down on roads and could also place strain the rail network, both of which could lead to travel disruption and delays. Travellers should check with their rail or bus operator, Traffic Wales or Traveline Cymru to be alerted to any disruption and change their travel plans accordingly.Schools and childcare