The Irish band are seen performing underwater in the clip, which they released via their official YouTube page.
Watch the 'Dreaming Again' music video below:
Discussing the group's success, which includes a platinum-selling album and a slot at this year's Bestival, frontman Danny O'Reilly said: "A year ago we could only have dreamed of playing at Bestival.
"We've heard loads about it and are so excited to be playing. It's definitely a festival we're proud to tick off our list of ambitions. Next on the list is headlining it!"
'Dreaming Again' - which is available to download from September 10 - precedes a string of UK shows throughout November, including a date at London's The Garage on November 22. Tickets are on sale now.
The full Coronas UK tour dates appear below:
- Friday 16 November - Aberdeen Lemon Tree
- Saturday 17 November - Glasgow King Tuts
- Sunday 18 November - Edinburgh Electric Circus
- Tuesday 20 November - Newcastle O2 Academy2
- Thursday 22 November - London The Garage
- Friday 23 November - Nottingham Bodega
- Saturday 24 November - Southampton The Joiners
- Monday 26 November - Birmingham The Other Room
- Tuesday 27 November - Brighton Komedia
- Wednesday 28 November - Manchester Ruby Lounge