October in Koh Tao is a mix of warmth and rain. The temperature swings between a comfortable 25°C at its lowest and a slightly hot 30°C at its peak. This means you can expect the days to be warm, but not unbearably so. The nights, on the other hand, are pleasantly cool, perfect for a leisurely stroll along the beach.
However, October also brings with it a significant amount of rainfall, with up to 290 mm expected throughout the month. This means there will be plenty of wet days, so don’t forget to pack your raincoat or umbrella. The wind speed is moderate, averaging around 10 km/h, adding a refreshing breeze to the warm, tropical climate.