The school first opened its doors to pupils last September and features include a new library, a fully-equipped IT suite and an original artwork in glass.
Sustainability and the environment were key to the new building's development and this is why a number of measures to save energy, natural resources and water were incorporated into the project.
Rhodri Morgan said:
“I am delighted to be opening this new school, which will offer best quality state of the art facilities and 21st Century standards for pupils and teachers. This will become a model for what primary schools should be providing for all our youngsters whether in Welsh medium or English medium primary education. We can expect great things from this school. ”
Headteacher Alun Jones says staff and pupils have immensely enjoyed their first academic year so far on the new campus.
"Things have gone really well since we moved onto the new site and credit must go to all involved with the school because the transition has been very smooth and the number of pupils has grown.
"The facilities in the building are fantastic and the teaching environment is vastly superior to what we had beforehand.
"The first academic year seems to have flown by and everyone is now looking forward to the future on this terrific site.
"It's one of the best facilities of its kind in this area."
The new Ysgol Gynradd Llwynderw site was built to meet increasing demand for Welsh medium education in the west of Swansea.
Contractors Wilmott Dixon worked in partnership with officers from Swansea Council's education department and Simon Trew of Stride Treglown architects on the design and construction of the new school.
Cllr Mike Day, Swansea Council's Cabinet Member for Education, said:
"There's been an increasing demand for Welsh medium primary education in Swansea and this is why we worked so hard to build this striking new school building in West Cross.
"The result is now there for everyone to see and feedback since September has been overwhelmingly encouraging from staff, pupils, parents and governors.
"The school's official opening is a proud moment for all involved and this is an educational facility that will prove hugely beneficial to thousands of young people in the years to come."
5 June 2009