Cool weather and strong advertising campaigns helped boost sales for Uniqlo Japan last month.

It says same-store sales, including online sales, increased by 6.3 per cent year on year, while sales at its own stores grew by 5.5 per cent. Total sales increased by 6.9 per cent, says the Fast Retailing Group subsidiary.

During the month, Uniqlo Japan opened four stores and closed two. It also opened its first store in Spain, Uniqlo Passeig de Gracia Store in Barcelona.