Modi will go to China for a summit of the multilateral Shanghai Cooperation Organisation which begins on August 31, a government source, with direct knowledge of the matter, told Reuters.
India's foreign ministry did not immediately respond to a request for comment.
His trip will come at a time when India's relationship with the US faces its most serious crisis in years after US President Donald Trump imposed the highest tariffs among Asian peers on goods imported from India.
Trump issued an executive order on Wednesday, imposing an additional 25 per cent tariff on goods from India, saying the country directly or indirectly imported Russian oil.
The penalties for buying Russian oil are part of US efforts to seek a last-minute breakthrough that will bring about a ceasefire in the war in Ukraine.
Trump's top diplomatic envoy, Steve Witkoff, is in Moscow, two days before the expiry of a deadline the president set for Russia to agree to peace in Ukraine or face new sanctions.
Modi's visit to the Chinese city of Tianjin for the summit, a Eurasian political and security grouping that includes Russia, will be his first since June 2018.
Subsequently, Sino-Indian ties deteriorated sharply after a military clash along their disputed Himalayan border in 2020.
Modi and Chinese President Xi Jinping held talks on the sidelines of a BRICS summit in Russia in October that led to a thaw.
The giant Asian neighbours are now slowly defusing tensions that have hampered business relations and travel between the two countries.
Trump has threatened to charge an additional 10 per cent tariff on imports from members of the BRICS group of major emerging economies for "aligning themselves with Anti-American policies".
Meanwhile, India's National Security Adviser Ajit Doval is in Russia on a scheduled visit and is expected to discuss India's purchases of Russian oil in the wake of Trump's pressure on India to stop buying Russian crude, according to another government source, who also did not want to be named.
Doval is likely to address India's defence cooperation with Russia, including obtaining faster access to pending exports to India of Moscow's S400 air defence system, and a possible visit by President Vladimir Putin to India.
Doval's trip will be followed by Foreign Minister Subrahmanyam Jaishankar in the weeks to come.
US and Indian officials told Reuters a mix of political misjudgement, missed signals and bitterness scuttled trade deal negotiations between the world's biggest and fifth-largest economies, whose bilateral trade is worth over $US190 billion ($A293 billion).
India expects Trump's crackdown could cost it a competitive advantage in about $US64 billion ($A99 billion) worth of goods sent to the US that account for 80 per cent of its total exports, four separate sources told Reuters, citing an internal government assessment.
However, the relatively low share of exports in India's $US4 trillion ($ A$6.2 trillion) economy is expected to limit the direct impact on economic growth.
On Wednesday, the Reserve Bank of India left its GDP growth forecast for the current April-March financial year unchanged at 6.5 per cent and held rates steady despite the tariff uncertainties.
