7–21 August 2016 was when it was held . Men's welterweight boxingat the Games of the XXXI Olympiad was established on 2005 . 12 events were there in Men's welterweight boxingat the Games of the XXXI Olympiad . 12 were the number of teams who competed in Men's welterweight boxingat the Games of the XXXI Olympiad . 200 from 43 nations were the competitors in Men's welterweight boxingat the Games of the XXXI Olympiad . The venue for Men's welterweight boxingat the Games of the XXXI Olympiad was North Greenwich Arena
Less than 31 nations participated in the event