The Canadian team beat the Scots in a very close final match. Scottish Seeker Hector Lamont blamed his failure to catch the Snitch on genetics (Pm).
Quidditch World Cup tournaments take place over several months, with the final match falling in July (as in 2014, Pm) or August (as in 1994, GF8).
Certainty Stated in canon
Type of Event Wizarding world
From the Web
Writing by J.K. Rowling on Pottermore:
Pottermore enhanced reading experience: Quidditch World Cup
Screenshots of the original Daily Prophet coverage of the 2014 Quidditch World Cup on Pottermore: Imgur archive