Mae Gweinidogion a swyddogion Llywodraeth Cymru hefyd yn cymryd rhan mewn strwythurau Argyfyngau Sifil Posibl ledled y DU i sicrhau dull cydgysylltiedig o ymdrin â materion trawsffiniol a achosir gan y gwres eithafol.
Welsh Government Ministers and officials are also taking part in UK-wide Civil Contingencies structures to ensure a co-ordinated approach to cross-border issues caused by the extreme heat.