Asian stocks were capped and the dollar dipped on Tuesday after US President Donald Trump accused China and Europe of manipulating their currencies and said he was “not thrilled” with the Federal Reserve for hiking interest rates.

Keeping global trade conflict concerns on the boil, Trump said in an interview with Reuters on Monday that China was manipulating the yuan to make up for having to pay tariffs imposed by Washington on some imports from China. He also said he believed the euro was being manipulated.

MSCI's broadest index of Asia-Pacific shares outside Japan was up 0.02 per cent. Australian stocks lost 0.7 per cent, South Korea's KOSPI nudged up 0.1 per cent and Japan's Nikkei fell 0.6 per cent. Wall Street's major indexes rose on Monday on optimism over trade talks between the United States and China, though they fell from session highs after Trump's comments.

Immediate focus was on the lower-level trade talks due to start later on Tuesday between the United States and China. Speculation that the talks might help ease trade tensions has shored up the broader equity markets over the past few sessions.

In currencies, the dollar came under pressure after Trump reiterated his displeasure at the Fed's rate hikes, saying the central bank should do more to help him boost the US economy. “While Trump's displeasure for rising interest rates is nothing new, and the Fed maintains full operational independence, markets remain attentive to such comments,” wrote strategists at ANZ.

The dollar index against a basket of six major currencies was down 0.2 per cent at 95.714, extending losses from the previous day. The euro brushed an 11-day high of $1.1493, stretching its gains after climbing about climbing about 0.35 per cent overnight. The US currency slipped to 109.84 yen, its lowest since late June. The offshore Chinese yuan was a shade firmer at 6.831 per dollar after dipping slightly the previous day.

Yield on the 10-year US Treasury note was near a six-week low of 2.807 per cent plumbed overnight in the wake of Trump's interest rate comments.

Oil prices extended their overnight rise, with US crude futures up 0.33 per cent at $66.65 per barrel. Crude rose on Monday after weeks of declines, as investors grew more concerned about an expected fall in supply from Iran due to US sanctions.