Applications for clearing in Wales is higher than in the rest of the UK, whilst places have been capped by the Welsh Government.
The number applying has reached an all-time high of 669,956 as candidates try to beat the rise in fees of up to £9,000 a year, coming in September 2012.
Today's A-Level results will likely see about 250,000 people chasing just over 40,000 places in clearing, meaning a record 210,000 will miss out.
Many A Level students will face a dilemma over whether to hunt for scarce jobs, volunteer as unpaid interns, take gap years or seek university places overseas.
In reaction to this news, NUS Wales President Luke Young said:
"This year's results are once again the opportunity to celebrate the wealth of talented learners in Wales. We should first congratulate them on their achievement.
We also need to be mindful of the thousands of learners, with good A-Level results, who will find it difficult to obtain a place at university this year. It is important to ensure that everyone is given the best opportunity to go into education, employment and training.
This week should be about ensuring students receive clear and accurate advice in supporting them to make the right decision for their future. Only a sufficient level of support will guarantee that no one falls through the gap. "
For further detailed information on A Level results in Wales, click
here.