Bangkok vs Koh Samui

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Koh Samui edges ahead as the better destination in August. Koh Samui offers 9 hours of daily sunshine with only 18 rain days, while Bangkok sees 8 sunshine hours and 24 rain days.

Bangkok can feel quite hot at 31°C, so plan for heat. Koh Samui is also comfortable at 27°C.

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

Bangkok reaches an average high of 31°C (88°F) and drops to 25°C (77°F) at night during August. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

Koh Samui averages 27°C (81°F) for the high and 24°C (75°F) for the low, with a daily range of 3°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 August.

Bangkok receives approximately 147 mm of rainfall across 24 rain days during August. Rain is frequent, so waterproof gear is essential.

Koh Samui sees 91 mm over 18 rain days. That makes Koh Samui the drier option by 6 rain days and 56 mm of total precipitation.

Both cities share similar humidity levels at 82%.