Greg Feek is confident that Ireland v Scotland will go ahead even if there is torrential rain in Yokohama on Sunday.
Scrum coach Feek has divided his time between Ireland and Japan over the last year due to his coaching work for Ricoh but will be living full time in Japan after the World Cup.
So he has experienced extremes in the weather conditions in the Far East.
“We’ve had trainings, and training matches and things like that, where the lightning has come and we’ve had to get off the field," he said.
"So I’ve experienced that a couple of times. But I’ve had games where it’s been torrential but nothing that has been called off.
“Last year we were in Fukuoka at exactly the same time, almost to the week, and it was predicted thunderstorms, 26 degrees. But there was nothing too major last year.”
"Everyone knows that it is kind of unpredictable. What we all know is that you can't predict it, you know what I mean? You have to prepare for all the situations that could be there.
"The dampness factor could be there no matter whether it rains or not.
"There could be moisture around, a bit of humidity around when there is sunshine and when there's not.
"When I was here last year (the temperature) slowly started to drop off as you got into October and the weather actually settled really well even if there was always the chance of thunder storms, potentially of an hour or half-hour in the early afternoons."
Feek confirmed yesterday that Robbie Henshaw's hamstring injury isn't severe enough to force Joe Schmidt to send the Leinster centre home and bring out Ulster's Will Addison as his replacement.
But Henshaw is out of the clash with the Scots and it is not yet known when he will return to action.
Feek said that the Ireland management will continue to monitor the situation, as they will with any injuries that players pick up over the course of the next few weeks.
“Yeah, that’s always a question we’ll be asking ourselves," he said.
"You have to make a call, you have to do what’s best for the team and within our squad we’re a tight-knit group. When you name a squad you want to give everyone an opportunity.
"This means that if there is something like this, that someone else gets an opportunity, that guy can support him, and then we can just go from there.
“Every team will ref this at some point. There will have to be some tough calls made.
"There’ll be more injuries over the course of the competition. In the end, you just have to do what’s best for the team and I know that’s always Joe’s modus operandi anyway”.
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