Alexis Sanchez was absent from the squad amid his seemingly impending move to Manchester United.
Hector Bellerin opened the scoring in the 52nd for Arsenal, which is in sixth place and has dropped five points off the Champions League qualification positions.
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The likes of Barcelona , Liverpool and Juventus are rumoured to be interested in the Germany global , but Bayern is leading the chase.
Callum Wilson nicked in ahead of Petr Cech to score the equaliser in the 70th minute and four minutes later the stirker turned provider to set up Jordon Ibe for the victor. Bournemouth, meanwhile, climb to 13th but remain just four points above the bottom three.
"The fans were flat so we needed to get them back in the game and a goal against a big team got them on their feet and then we added a second". We worked hard today, but we made mistakes and I wouldn't say the team hasn't worked or not played with a good spirit.
There were a couple of chances for either side in the opening exchanges, with Ainsley Maitland-Niles coming closest in the eighth minute - hitting the crossbar after a cross from Alexandre Lacazette fell to him.
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The mudslides now cover a 30-square-mile area, and the threat of additional mudslides will continue over the next several days. Flash floods swept down hillsides, unleashing torrents of mud, and uprooted trees and boulders into the valley below.
Mesut Ozil was also missing because of injury and Arsenal's lineup looked a shadow of the past teams under Wenger.
The Gunners defeat means they are still yet to win in 2018, and have only take maximum points from three out of 12 Premier League fixtures this season.
Callum Wilson grabbed the Bournemouth equaliser before Jordan Ibe scored a timely first goal for the club as the Gunners' struggles on the road continued.
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The 79-year-old who became Africa's first democratically elected president in 2005, did not react to such claims. We spoke to the CEO of Bestman Games, Mrs Nimi Akinkugbe, on the importance and culture of board games.
Arsenal will now look to banish the disappointment of defeat at Bournemouth by beating Crystal Palace at the Emirates Stadium next weekend, a game which is followed by an EFL Cup semi-final second leg tie against Chelsea; the first leg ended 0-0 at Stamford Bridge.