Alberto Zaccheroni's team will play the games against Costa Rica (June 2) and Zambia (June 6) at the Raymond James Stadium, home to National Football League's Tampa Bay Buccaneers.
"I chose Florida as a campsite because we need to acclimatise to the heat and humidity in Brazil while minimising the travel," Zaccheroni was quoted as saying by the Kyodo news agency. "Florida made for the ideal destination.
"Costa Rica are a side good enough to qualify for the World Cup, and Zambia's march to the African Nations Cup title (in 2012) is still fresh in my memory.
"These two games will be extremely important when we bear in mind what kind of these teams we will be up against at the World Cup."
Japan are in Group C in the World Cup finals with Colombia, Greece and Ivory Coast as the other teams. Costa Rica are in Group D with Italy, Uruguay and England.
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