Penang vs Koh Samui

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Koh Samui edges ahead as the better destination in March. Koh Samui offers 11 hours of daily sunshine with only 10 rain days, while Penang sees 10 sunshine hours and 23 rain days.

Penang can feel quite hot at 30°C, so plan for heat. Koh Samui is also comfortable at 26°C.

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

Penang reaches an average high of 30°C (86°F) and drops to 25°C (77°F) at night during March. The daily temperature range is 5°C, meaning relatively stable temperatures from day to night.

Koh Samui averages 26°C (79°F) for the high and 24°C (75°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 March.

Penang receives approximately 182 mm of rainfall across 23 rain days during March. Rain is frequent, so waterproof gear is essential.

Koh Samui sees 89 mm over 10 rain days. That makes Koh Samui the drier option by 13 rain days and 93 mm of total precipitation.

Both cities share similar humidity levels at 82%.