46% of grassland fires in 2018-19 occurred in July 2018, almost 9 times as many as in July 2017.
O gymharu'r cyfrif ym mis Gorffennaf 2017 a mis Gorffennaf 2018, mae nifer y carafanau ar safleoedd awdurdodedig wedi codi gan 6% (47 carafán).