In the Tokyo foreign exchange market on the 18th, yen selling and dollar buying increased against the backdrop of rising crude oil futures prices, sending the yen down to ¥159.71 per dollar.
Yen selling and dollar buying emerged in response to rising crude oil futures prices and other factors.
As of 5 p.m., the yen stood at ¥159.71 per dollar, weaker against the dollar than the previous day.
In trading that day, the yen settled at a level 76 sen weaker than on the 17th.