There has also been an increase in arrivals of asylum seekers on small boats, which the Welsh Government believes to be a consequence of withdrawal from the EU.
Bu hefyd gynnydd yn nifer y ceiswyr lloches sy’n cyrraedd mewn cychod bach, sy’n digwydd, ym marn Llywodraeth Cymru, o ganlyniad i’r ymadawiad â’r UE.