Spain's jobless rate increased for the first time in six months in August, rising by 0.18%, or by 8,070 people, from July.
This means that 4.43 million people are out of work, according to the data from the Labour Ministry today.
In year-on-year terms, the number out of work fell 5.76%.
Joblessness remains Spain's main economic problem after the country exited recession in the second half of last year.
The quarterly unemployment rate, running at 24.5% in the second quarter, is calculated on the basis of a survey by the country's statistics institute as many jobless are not eligible for benefits and therefore do not register.