Typhoon Lekima is currently battering Taiwan with winds of more than 190km/h (120mph) and is due to make landfall in China's Zhejiang province on Saturday.
The new Conservative leader will take office on Wednesday afternoon following an audience with the Queen at Buckingham Palace.
South Africa's ex-President Jacob Zuma told a judge-led inquiry that allegations of corruption against him were a "conspiracy" aimed at removing him from the political scene.