(Corrects to remove reference to second straight day for eight-month closing high in first paragraph)
TOKYO, Jan 13 (Reuters) - The Nikkei average rose to an eight-month closing high on Thursday, after a successful bond auction in Portugal eased fears about the euro zone's debt crisis and lifted European and U.S. shares.
The benchmark Nikkei was up 0.7 percent or 76.96 points at 10,589.76. Its immediate resistance looms at the May 13, 2010, high of 10,638.23.
The broader Topix added 0.9 percent to 937.74. (Reporting by Ayai Tomisawa and Antoni Slodkowski; Editing by Chris Gallagher)