The team arrived in Qatar on Monday (Aug 22) to train there before meeting Saudi Arabia in Riyadh on Sept 1.
Kiatisak said everything in Qatar is fine as a chef and a nutritionist are with the team.
However, he complained about humidity in the region which could make his players exhausted fast.
“The players sweat easily. I hope they are able adapt to the weather as soon as possible,” said Kiatisak.
He said it was good for his team to arrive in the region 10 days before the match, giving them a chance to play a warm-up game first.
“Every player is looking forward to the match. Saudi Arabia are a strong team but we are not afraid of anyone. We believe we can surprise many in the World Cup qualifying campaign.”
Thailand will play Qatar in a warm-up match today (Aug 25) before they leave for Saudi Arabia on Monday (Aug 29).
Thailand are in Group B of Asia’s final qualifying round for the 2018 World Cup along with Saudi Arabia, Japan, Australia and Iraq.
Group A of the 12-team event features Iran, South Korea, Uzbekistan, China, Qatar and Syria.
They will play on a home-and-away basis starting next month and finishing in September 2017.
The top two teams from each group automatically qualify for Russia 2018. The third-place teams face each other with the winners taking on a Concacaf side in a play-off for another berth.
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