Fodd bynnag, yn ôl arolwg ymweliadau dros nos o Brydain ar gyfer y 12 mis a ddaeth i ben ym mis Ionawr 2017, mae nifer yr ymweliadau wedi gostwng 11.6% o’i gymharu â'r 12 mis a ddaeth i ben ym mis Ionawr 2016. Mae nifer yr ymweliadau â Phrydain gyfan wedi gostwng 3.9% dros yr un cyfnod.
The Great Britain Day Visitor Survey shows that in the 12 months ending April 2017, there were 103.2 million tourism day visits to Wales, with an associated spend of £4,265 million. The number of visits has increased 20.4% compared to the 12 months ending April 2016, while the amount spent has increased 30.2%.