The sales figure includes value-added tax.
In the June-August quarter, the sales of the company in Slovenia amounted to 114 million Swedish crowns, 3.0% less than a year earlier.
At end-August, H&M had 12 stores in Slovenia, the company said in its nine-month report.
Elsewhere in Southeast Europe, H&M has stores in Bulgaria, Romania and Slovenia.
(1 euro=8.4735 Swedish crowns)