Mary Keller, head of monitoring and reporting at the UN Office for the Coordination of Humanitarian Affairs, says the deaths were caused by collapsed rooftops and electrocution.
Typhoon Lekima made landfall early on Saturday in China's Zhejiang province, with winds gusting up to 187 kmh (116 mph). The centre of the storm has since travelled north through Shandong and off the coast.
Triggered by heavy rainfall, the floods and landslides have left 43 people dead with 24 missing in Nepal. More than 1,100 people have been rescued from flooded areas.
About 900 mm of rain has fallen on the southernmost main island of Kyushu since late June, with heavy rain forecast to continue into Thursday.
Thunderstorms have affected several states in India and Pakistan killing 86 people, damaging homes and downing trees. In neighbouring Afghanistan, at least five people have died.
At least 70 people have been killed and about 1,900 cities and villages have been affected by floods after exceptionally heavy rains since March 19.
Hundreds more were injured in 25 out of 31 provinces following the flooding, which was triggered by torrential rainfall.
Torrential rains were expected to continue into Thursday and floodwaters were still rising, according to aid groups trying to get food, water and clothing to desperate survivors.
A storm ravaging southern Africa is possibly the worst weather-related disaster ever to hit the southern hemisphere, with 1.7 million people in the path of the cyclone in Mozambique and 920,000 affected in Malawi, UN officials say.
Australia's tropical north experiences heavy rains during the monsoon season at this time of the year, but the recent deluge has surged far above normal levels.
Among the worst hit areas were the villages of Conques-sur-Orbiel and Villardonnel, where waters rose as high as the first-floor windows of some houses.
The floodwaters have now largely receded and fewer than 10,000 people remain in temporary camps, down from 1.4 million at the height of the crisis but people face several disease outbreaks.
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