The figures also show that while there has been a small decrease in expenditure across the UK as a whole, expenditure by overseas visitors in Wales has increased by more than 8%.
Mae'r ffigurau hefyd yn dangos er bod ychydig llai o wariant ar draws y DU yn gyffredinol, bod gwariant ymwelwyr tramor yng Nghymru wedi cynyddu dros 8%.