US fastfood giant McDonald's has said global systemwide sales for McDonald's restaurants rose 5.7% in August, or 4.4% in constant currencies.

August comparable sales rose 3.4%, with US comparable sales increasing 3.2% and Europe comparable sales increasing 3.6%.

"Our Plan to Win, with its strategic focus on customers, continues to deliver results with global comparable sales up 3.4% in August. Combined customer initiatives including greater menu variety, compelling everyday value offerings, convenient and contemporary restaurants and relevant marketing continue to drive our business forward," said McDonald's chief executive officer Jim Skinner.

"In Europe, comparable sales rose 3.6% in August, due to strong performance in France and Germany partly offset by continued weakness in the United Kingdom. A variety of premium and value products along with popular marketing promotions are giving customers even more reasons to visit our restaurants in Germany and France. We will build on this encouraging business momentum with successful customer-focused plans across Europe.

"In Asia/Pacific, Middle East and Africa, we continue to enhance our menu variety and value, which contributed to August comparable sales rising 4.0%, despite a negative calendar shift," Skinner added.

Comparable sales represent sales at all McDonald's restaurants in operation at least thirteen months, excluding the impact of currency translation. Systemwide sales include sales at all McDonald's restaurants, including those operated by the company, franchisees and affiliates.