The Australian share market is expected to open lower as investors await a meeting between the US and Chinese leaders at the G20 summit in Japan.

The SPI200 futures contract was down 9 points, or 0.14 per cent, at 6,594.0 at 0800 AEST, suggesting an early dip for the benchmark S&P/ASX200 on Friday.

On Wall Street overnight, the Dow Jones Industrial Average finished down 0.04 per cent, the S&P 500 was up 0.38 per cent and the tech-heavy Nasdaq Composite was up 0.73 per cent.

Chinese President Xi Jinping and US President Donald Trump are expected to meet on Saturday amid hopes of easing trade tensions between the two countries.

The Aussie dollar is buying 70.06 US cents from 69.94 US cents on Thursday.