The Ministry of Finance offered 2.4 trillion yen ($23.50 billion) of 10-year JGBs with a 0.10 percent coupon.
The notes sold at a lowest price of 103.47, and drew bids of 3.64 times the amount offered, indicating solid demand though falling a bit short of the previous sale's bid-to-cover ratio of 4.11 times.
The tail between the average and lowest accepted prices was a narrow 0.03, compared with that of last month's offering at 0.02, indicating demand remained strong for the bonds.
The 10-year yield was up half a basis point at minus 0.250 percent, after earlier rising as high as minus 0.240 percent. It remained not far from its recent record low of minus 0.260 percent.
The 20-year JGB yield fell to a record low of 0.030 percent after the auction results, before inching back to 0.035 percent, down half a basis point on the day.
The 30-year JGB yield shed 2 basis points to 0.055 percent .
September 10-year futures ended down 0.03 point at 153.31, moving away from their record high of 153.53 touched on Monday.