Average humidity in Koh Samui

On this page you find more information about the monthly relative humidity over the year in Koh Samui (Bangkok Province), Thailand.

Koh Samui's humidity levels vary throughout the year. The highest levels occur in October, reaching 85% (very high), while the lowest is recorded in June at 78%.

Throughout the year, the average humidity in Koh Samui is 81%.

Humidity plays an important role in how temperatures are felt. During the warmest month, May, the maximum average temperature is around 31°C. Combined with very high humidity during this period, the temperature can feel even warmer than the thermometer shows.

During the coldest month, January, the maximum average temperature is around 29°C. This period has very high humidity. Check out our detailed temperature page for more information.