England and Brazil can expect temperatures in the region of 28C and the possibility of rain for their quarter-final match in Shizuoka on Friday.
The match kicks-off at 3.30pm local time - causing concern in the England camp that hot and sticky conditions will be more suited to their South American opponents.
The weather is usually extremely humid and energy-sapping in Japan at this time of year.
But BBC weatherman Rob McElwee thinks it will not be too humid on Friday, thanks to a cold front passing through the region.
However, despite heavy showers on Thursday, he doesn't foresee much of the rain England had hoped would fall.
"You can expect a reasonably high level of humidity, partly because it is raining in Shizuoka on Thursday," said McElwee.
"This means that there will be a lot of moisture in the ground, which increases humidity levels.
"But there is a cold front due to pass through Shizuoka on Friday so it should not be too bad for the players."
Rain fell steadily over the Shizuoka Stadium Ecopa on Thursday, which is close to Mount Fuji in the southern central area of Japan.
But McElwee thinks this will clear up on Friday - and is even forecasting the odd patch of blue sky over the stadium during the match.
"The game is being played at the hottest time of the day and the temperature will be in the high 20s with bits of blue sky here and there," said McElwee.
"But it should not get any higher than 29C."