Koh Samui Weather in October

October in Koh Samui brings high temperatures, with highs of 29°C (84°F) and nights dropping to 26°C (79°F). It's the rainiest month of the year, so come prepared with waterproof gear.

Rainfall in Koh Samui in October

Prepare for intense rain this month, as it marks the peak rainfall period. Having a poncho will keep you dry through the downpours. Typically, about 20 days will experience rainfall, with an average of 296 mm (12 in) for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Koh Samui in October

In October, Koh Samui gets high temperatures, with highs of 29°C (84°F). Nights cool to around 26°C (79°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 26°C (79°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.

Sunshine in Koh Samui in October

With about 146 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Average water temperature in October

The water reaches 29°C (84°F) this month. It's on the warm side, which suits people who prefer that, but don't expect a cooling dip if the air temperature is also high.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January and February typically offer the best weather for Koh Samui.