The early onset of the rainy season hit June sales figures at low-cost retailer Uniqlo's Japanese stores, which registered a like-for-like increase of 0.7%.

The slowdown came despite a 5.4% increase in revenues from the company's direct-run retail outlets in Japan, and a 5.7% increase in overall sales, which includes direct mail and corporate sales.

Uniqlo closed four stores and opened six during June, which followed a buoyant set of figures for the company in May, when like-for-like sales were up 7.9%.

"June existing store sales held flat year-on-year as the earlier onset of the rainy season dampened customer numbers," Uniqlo said.