The Nikkei share average climbed 1.8% to finish above 14,000 for the first time in five weeks on Tuesday as blue-chip exporters gained on a weaker yen. Encouraging U.S. manufacturing and construction data also lifted investor sentiment.
The benchmark Nikkei ended 246.24 points higher at 14,098.74, advancing for a fourth day in a row and marking its longest winning streak since mid-May.
The broader Topix index added 1.8% to 1,171.84 in moderate trade, with 3.02 billion shares changing hands.