The jobless rate increased to three percent from 2.9 percent in July, the state secretariat for economic affairs (Seco) said in its monthly report.
The number of people registered for unemployment benefits rose to 128,434 in August, an increase of 1,380 from the previous month.
The rate of unemployed remained unchanged from August last year.
Last month marked the first time since December 2013 that the jobless rate rose from the previous month.
The canton of Geneva continue to record the highest unemployment rate in the country at 5.4 percent, unchanged from the month earlier, while Uri registered the lowest rate (0.8 percent, up from 0.6 percent).
The rate remained unchanged in Zurich, Switzerland’s largest job market.
For the full report (in German, French or Italian) click here.