Tokyo could be hottest Olympics ever - and the brutal toll on athletes makes it a dangerous game

Tokyo is hot in the summer. That's why back in the 1964 Olympics they shifted events into October and the athletes enjoyed pretty much perfect temperatures.

The average was about 20C (68F). The warmest day was 23.3C (73.9F). Ideal for almost everyone.

These Games have been different in so many ways and are on track to be one of the hottest ever.

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Daily Climate Show: Hidden dangers of heatwaves

During these Games temperatures have exceeded 32 degrees on several days and the heat has been compounded by high humidity levels.

Just going for a short morning run in Tokyo, in a facemask (as most other runners do), it is energy sapping - for the athletes pushing their bodies to the absolute limits then it's a dangerous game.

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Every outdoor sport has had to adapt - the coaches and athletes have had to find the right balance between exertion and conserving energy.

The tennis players have been particularly angry that they've been out in such conditions. World number one Novak Djokovic said it was "brutal".

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Organisers did move events from the most intense heat at lunchtime but it hasn't placated the complaints.

Image: Novak Djokovic cools off between sets in the men's singles semi-finals at the Games

Djokovic said: "I've played tennis professionally now 20 years, and I've never faced these kind of conditions in my entire life on a consecutive daily basis."

Next year's World Cup in Qatar has already been shifted to November and December - even with air conditioned stadiums it's still not safe to play in the searing heat of their summer.

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Daily Climate Show: Hottest Olympics yet?

These Olympic Games though will be remembered for all kinds of reasons - the heat will be just one of them.

The International Olympic Committee was desperate just to make these Games happen after all the upheaval of the pandemic, but picking a month that suits the weather makes so much sense.

They got it right in 1964 - and should think hard about it for Paris in 2024 and Los Angeles in 2028.

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