The Australian share market has had its worst day in three weeks, with the financial and energy sectors weighing as analysts look to China for fresh economic data.

The benchmark S&P/ASX200 index finished 26.1 points, or 0.41 per cent, lower to 6,359.5 points at 1615 AEST on Monday, while the broader All Ordinaries slipped 23.6 points, or 0.36 per cent, to 6,449.6 amid thin volumes.

The domestic energy sector suffered a 0.74 per cent drop after US President Donald Trump pressured the Organisation of the Petroleum Exporting Countries to raise crude production to ease petrol prices at the weekend.

The big banks, industrials, telcos, and property trusts also dragged the local market lower.

Industrial profit data from Chinese firms has so far been upbeat.

The Australian dollar was worth 70.59 US cents, up from 70.25 on Friday.