The Portuguese star beat American Gabe Kling in an exciting final to collect his first European victory, while Germany's Marlon Lipke was crowned overall 2012 European Champion after the event.
In a breathtaking final, both surfers got back-to-back rides on the two-to-three foot waves and tried to keep busy and build momentum, but ultimately it was 'Saca' who took command of the heat and imposed his backhand attack to come out with the win.
"I feel amazing," said Pires. "It's been a few years since I won an event and I haven't felt the rush of adrenalin you get when winning for a while now.
"I was really sad with my performance in the European leg, I've been struggling on the last few CT events and I just came here to get some points and work on my Star rankings.
"It's been a very tough event with many guys shredding and I didn't see myself make the final, but things got together for me and I felt better and better throughout the event with the semi-final being my peak performance.
"I was scared of Gabe cause he's a really good competitor, he's won events and I knew it was going to be a hard one!"
Kling admitted that he was disappointed not to have won.
"I'm so stoked to make the final, but I feel like I left a little something on the table." He said.
"I didn't surf my best heat last and that's what it's all about. Tiago surfed great all event, there's no shame losing out to this amazing surfer.
"I haven't really had much else since my third at the beginning of the year, so there's a lot of positives I can take from that and I had a great time."
28-year-old Lipke went out early on in the event, but then witnessed his nearest rivals fall by the wayside one-by-one to hand him the title.
ISLAS CANARIAS SANTA PRO FINAL RESULTS:
1 - Tiago Pires (PRT) 16.53
2 - Gabe Kling (USA) 14.47
ISLAS CANARIAS SANTA PRO SEMI-FINALS RESULTS:
SF 1: Gabe Kling (USA) 17.50 def. Nathaniel Curran (USA) 11.60
SF 2: Tiago Pires (PRT) 19.73 def. Willian Cardoso (BRA) 14.10
ISLAS CANARIAS SANTA PRO QUARTER-FINALS RESULTS:
QF 1: Gabe Kling (USA) 12.33 def. Aritz Aranburu (EUK) 9.36
QF 2: Nathaniel Curran (USA) 14.00 def. Jean Da Silva (BRA) 8.74
QF 3: Willian Cardoso (BRA) 15.33 def. Beyrick De Vries (ZAF) 7.27
QF 4: Tiago Pires (PRT) 14.17 def. Marc Lacomare (FRA) 13.54
ISLAS CANARIAS SANTA PRO ROUND OF 16 RESULTS:
Heat 1: Gabe Kling (USA) 12.33 def. Heitor Alves (BRA) 10.07
Heat 2: Aritz Aranburu (EUK) 13.86 def. Romain Cloitre (FRA) 5.30
Heat 3: Nathaniel Curran (USA) 14.00 def. Nat Young (USA) 11.00
Heat 4: Jean Da Silva (BRA) 14.94 def. Jonathan Gonzalez (CNY) 12.77
Heat 5: Willian Cardoso (BRA) 10.00 def. Filipe Toledo (BRA) 7.20
Heat 6: Beyrick De Vries (ZAF) 12.17 def. Lucas Silveira (BRA) 8.94
Heat 7: Tiago Pires (PRT) 12.50 def. Adrien Toyon (FRA) 6.40
Heat 8: Marc Lacomare (FRA) 11.27 def. Vincent Duvignac (FRA) 8.93
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- Tiago Pires