Penang vs Koh Samui

Penang and Koh Samui are closely matched in August. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.

Penang can feel quite hot at 30°C, so plan for heat. Koh Samui runs hot at 31°C.

For travelers who prioritize dry weather, Koh Samui is the stronger choice in August. Penang receives 3 more hours 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 August. The daily temperature range is 5°C, meaning relatively stable temperatures from day to night.

Koh Samui averages 31°C (88°F) for the high and 24°C (75°F) for the low, with a daily range of 7°C. The two cities feel quite similar in terms of temperature.

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

Penang receives approximately 206 mm of rainfall across 24 rain days during August. Rain is frequent, so waterproof gear is essential.

Koh Samui sees 175 mm over 15 rain days. That makes Koh Samui the drier option by 9 rain days and 31 mm of total precipitation.

Both cities share similar humidity levels at 82%.