The season when the tsunami occurred was the peak tourist season for countries around the Indian Ocean, and there were particularly many foreign tourists coming here for vacation.

There is no seasonality in the occurrence of tsunamis, because most tsunamis are caused by earthquakes. The Indian Ocean is near the plate boundary. If there are many earthquakes, there will be more tsunamis. The countries around the Indian Ocean are all in tropical areas, with high temperatures all year round, and temperature is not a factor that affects tourism. It is a monsoon area with a lot of precipitation in summer and is too humid, so it is better to travel in winter because there are sunny beaches.