The game started in relatively calm conditions, but the weather took a turn for the worse before the final whistle blew. Torrential rain pummelled Camp Nou during the closing stages - leading to many fans leaving early.
Those calling the contest for radio and television, alongside those looking to post updates for social media and online publications, had no choice but to see the game out. Their life was made more difficult than it needs to be.
That is because the roof above their heads sprung a serious leak. Laptops and recording equipment were drenched as water tumbled onto seats in the stands. Camp Nou only reopened a couple of months ago after undergoing a serious, and very expensive, facelift.
Barca are taking their overall capacity up to 105,000, but are currently welcoming a little more than 45,000 spectators through the gates. An elaborate project, which has spanned more than two years, is supposed to be completed in June.