Ko Samui's climate is characterized by warm temperatures year-round, with minimal seasonal variation. The average high temperature remains relatively consistent throughout the year, typically ranging between 32-37°C, while the low temperature fluctuates between 17-24°C. During the peak summer months (April to July), temperatures can soar to as high as 36-37°C, but even during this period, nighttime lows remain pleasant. The cooler months of December and January bring slightly lower highs, but still averaging around 32-34°C. Overall, Ko Samui's tropical climate ensures a warm and sunny environment for most of the year.