With Tokyo's summer heat and unpredictable weather likely to prove a severe headache during the 2020 Olympics, sports bodies are using every resource at their disposal to prepare athletes and spectators for extreme conditions.

Several organizations have turned to a weather forecasting company to feed them firsthand meteorological data in a bid to understand what to expect during the Tokyo Olympics and Paralympics, which will be held in July and August, Japan's hottest months.

"The weather cannot be changed — there's absolutely nothing we can do about it. What it comes down to is how well athletes prepare for it," said Kazuo Asada, who runs the sports meteorology team at Weathernews Inc., based in Chiba Prefecture.