TOKYO, Sept 17 (Reuters) - Japan's Nikkei average rose 1.2 percent to a six-week closing high on Friday, helped by a weaker yen after Japan's massive yen-selling this week, leading the benchmark to book its best weekly performance this year.
The benchmark Nikkei was up 116.59 points at 9,626.09, its highest finish since Aug. 6.
The Nikkei gained 4.2 percent on the week, its best weekly performance since early December 2009.
The broader Topix added 0.9 percent to 852.09. (Reporting by Aiko Hayash; Editing by Edwina Gibbs)