Penang vs Koh Samui

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Koh Samui edges ahead as the better destination in October. Koh Samui offers 9 hours of daily sunshine with only 26 rain days, while Penang sees 8 sunshine hours and 29 rain days.

Penang can feel quite hot at 29°C, so plan for heat. Koh Samui is also comfortable at 25°C.

For travelers who prioritize dry weather, Koh Samui is the stronger choice in October. Koh Samui receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Penang reaches an average high of 29°C (84°F) and drops to 25°C (77°F) at night during October. The daily temperature range is 4°C, meaning relatively stable temperatures from day to night.

Koh Samui averages 25°C (77°F) for the high and 23°C (73°F) for the low, with a daily range of 2°C. The 4°C difference is noticeable but not dramatic.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in October.

Penang receives approximately 337 mm of rainfall across 29 rain days during October. Rain is frequent, so waterproof gear is essential.

Koh Samui sees 282 mm over 26 rain days. That makes Koh Samui the drier option by 3 rain days and 55 mm of total precipitation.

Both cities share similar humidity levels at 82%.