The Welsh XV had plenty of possession to win the game but did not break the gainline often enough up front or run strongly and directly enough behind.
The Welsh forwards more than held their own but behind the scrum it was the tourists who had the edge in both pace and penetration.
Two of the threequarter line, centre Luke McAlister and wing Joe Rokocoko, played in the under-19 side that won the Junior World Cup in Chile last year and they looked the class players of the night.
Rokocoko made the first try with a powerful blindside surge and well-timed pass to supporting scrum-half Scott Cowan to give New Zealand a 7-6 lead, McAlister kicking the conversion.
Cardiff fly-half Nick MacLeod had kicked two penalties to give Wales a 6-0 lead and his third just before half-time put Wales into a tenuous 9-7 lead at the interval.
McAlister kicked New Zealand back into the lead with a penalty before replacement wing Tony Koonwaiyou dramatically snatched the ball out of the grasp of Llanelli full-back Ceiron Thomas to sprint clear for a try converted by McAlister.
Wales threatened but handled sloppily in the face of aggressive defence. The forwards with hooker Huw Bennett (Swansea) and No 8 James Malpas (Cardiff) continued to make a real game of it.
Wales: Pens - N MacLeod (3). New Zealand: Tries - S Cowan, T Koonwaiyou; cons - L McAlister (2); pen - McAlister.
New Zealand Schools will face Welsh Schools U18 at Neath RFC on Friday 18 January. The match kicks off at 7.15pm
Porthcawl recently received a WRU facilities grant and funding from Natwest RugbyForce in order to give their changing rooms a facelift. This came after receiving £10,000 in a WRU facilities grant last year to tarmac their car park. The improvements have already helped to make the club more accessible, not only for their own members and players but for the whole community.
The Welsh Rugby Union has launched a new, accredited Safeguarding and Protecting Children course - funded by the WRU and delivered in partnership with Sport Wales and the NSPCC - fo rugby club volunteers around Wales.
The SWALEC semi-final draws threw up some mouth-watering clashes in the Cup, Plate and Bowl as the 12 teams aim for the Millennium Stadium Finals Day. All the semi-finals are to be played on the weekend of April 12.
Welsh whistler Rhys Thomas continues to scale the heights of the game as he prepares to be an official in this weekend's Hong Kong Sevens tournament, undoubtedly the showpiece event on the World Series calendar.
Wales International Ian Evans and Wales and Lions legend Scott Quinnell swapped rugby balls for paint pots at Tonna during the RBS 6 Nations. They surprised club players with a special clubhouse makeover to launch NatWest RugbyForce 2014 - a programme developed in partnership with the WRU to make rugby clubs stronger businesses by improving and renovating their facilities with the support of volunteers and the local community.
Fresh from claiming the Bowl honours in Tokyo last Sunday, the Wales Sevens squad have settled into their routine as they prepare for this weekend's Hong Kong tournament where Iolo Evans is aiming high, as WRU TV's Graeme Gillespie discovers.
The Welsh Rugby Union has recently teamed up with Prostate Cymru to help the charity launch its latest campaign to raise awareness of the disease. Members of the Wales squad helped produce a short video and promotional material for the campaign titled 'The Best Defence - is to know the FACTS'.