The temperature in Miami for the game was around 30°C with a humidity of 70%.
Although that is not as hot as it has been at some other Club World Cup matches, Tudor said it took its toll on his players.
“The conditions were really difficult today,” said the Juventus boss, who made the maximum five substitutions.
“In the end, 10 players asked to be substituted. The exhaustion was incredible.
“There’s the tension of this match, which burns your energy. Then there’s this heat, which really gets to you, and the third thing that completes the conditions is playing in this humidity.
“All of these conditions make it much more difficult.”
A number of matches at the tournament have been impacted by the weather.
There have also been cooling breaks in 33 out of 56 games.
“I think it is time to rest now,” added Tudor, who was appointed in March to replace Thiago Motta.
“We will have three weeks of rest, so I don’t think it (Club World Cup) will affect us in a negative way. But yes, we need to get some rest, start again and be stronger.
“The guys really gave it all, we played all our best cards and it wasn’t enough unfortunately.
“If there are lessons, we know we can compete against some of the best players in the world and it is a precious experience when you play against clubs of a higher level.”
Real Madrid face Borussia Dortmund in the quarter-finals of the Club World Cup.
