The 23-year-old Worcester Warriors wing scored three tries and made another as he started all five games for Wales in the Grand Slam campaign. He is one of four Wales players nominated for the Guinness Player of the Tournament award.
He will join fellow Welsh Squad heroes Gareth Anscombe, Tomos Williams, Dillon Lewis, Seb Davies, Josh Navidi, Jarrod Evans and Josh Turnbull at the Arms Park.
“It is great to be returning to Wales and I cannot wait to link up with Cardiff Blues next season. I’ve been really impressed with John Mulvihill’s vision for the future and the attacking brand of rugby the Blues play will really suit my game,” said Adams.
“It is a young and exciting squad, with a good blend of experience, which has a bright future and I’m looking forward to contributing towards that. I will always be grateful to Worcester Warriors for giving me the opportunity to become a professional player and I have loved my time at Sixways.
“But to play for Wales I need to play in Wales and Cardiff Blues is the best fit for me. I’m really looking forward to the next chapter of my career at Cardiff Arms Park.”
Adams burst onto the scene at Worcester Warriors during the 2016-17 season and has now made 59 appearances and scored a hugely impressive 34 tries. He also had spells out on loan at Cinderford and Nottingham before making the grade in the English Premiership.
The former Wales Under 20 caps was the Premiership’s joint-top scorer last season with 13 tries. He scored 17 in all competitions and scooped both the Warriors’ Young Player and Player of the Year awards.
His performances have been equally impressive in the Welsh jersey since making his debut against Scotland in 2018. He now has 11 caps to his name, has won 10 times and has scored four tries.
Adams is the first signing following the approval of Cardiff Blues’ budget for next season and head coach Mulvihill believes it is a significant signal of intent.
“It’s an exciting signing for the region and demonstrates our strong rugby ambition going forward. Josh is a player we can build success around as he brings genuine hunger to succeed, enormous energy and the skill-set and speed to make a real difference to our group,” said Mulvihill.
“Just from watching him in the Six Nations, you can see he’s a really busy player who makes big contributions both in attack and defence. He is also a good team man and we’re looking forward to getting him on board for next season.”